a-, an- no; not; without ab- away from abdomin/o abdomen -ac pertaining to acanth/o spiny; thorny acetabul/o acetabulum (hip socket) acous/o hearing acr/o extremities; top; extreme point acromi/o acromion (extension of shoulder bone) actin/o light acu/o sharp; severe; sudden -acusis hearing ad- toward aden/o gland adenoid/o adenoids adip/o fat adren/o adrenal gland adrenal/o adrenal gland aer/o air af- toward agglutin/o clumping; sticking together -agon to assemble, gather agora- marketplace -agra excessive pain -al pertaining to alb/o white albin/o white albumin/o albumin (protein) alges/o sensitivity to pain -algesia sensitivity to pain -algia pain all/o other alveol/o alveolus; air sac; small sac ambly/o dim; dull -amine nitrogen compound amni/o amnion (sac surrounding the embryo) amyl/o starch an/o anus -an pertaining to ana- up; apart; backward; again, anew andr/o male aneurysm/o aneurysm (widened blood vessel) angi/o vessel (blood) anis/o unequal ankyl/o stiff ante- before; forward anter/o front anthrac/o coal anthr/o antrum of the stomach anti- against anxi/o uneasy; anxious aort/o aorta (largest artery) -apheresis removal aphth/o ulcer apo- off, away aponeur/o aponeurosis (type of tendon) append/o appendix appendic/o appendix aque/o water -ar pertaining to -arche beginning arter/o artery arteri/o artery arteriol/o arteriole (small artery) arthr/o joint -arthria articulate (speak distinctly) articul/o joint -ary pertaining to asbest/o asbestos -ase enzyme -asthenia lack of strength atel/o incomplete ather/o plaque (fatty substance) -ation process; condition atri/o atrium (upper heart chamber) audi/o hearing audit/o hearing aur/o ear auricul/o ear auto- self, own axill/o armpit azot/o urea; nitrogen bacill/o bacilli (bacteria) bacteri/o bacteria balan/o glans penis bar/o pressure; weight bartholin/o Bartholin glands bas/o base; opposite of acid bi- two bi/o life bil/i bile; gall bilirubin/o bilirubin -blast embryonic; immature -blastoma immature tumor (cells) blephar/o eyelid bol/o cast; throw brachi/o arm brachy- short brady- slow bronch/o bronchial tube bronchi/o bronchial tube bronchiol/o bronchiole bucc/o cheek bunion/o bunion burs/o bursa (sac of fluid near joints) byssin/o cotton dust cac/o bad calc/o calcium calcane/o calcaneus (heel bone) calci/o calcium cali/o calyx calic/o calyx capillar/o capillary (tiniest blood vessel) capn/o carbon dioxide -capnia carbon dioxide carcin/o cancerous; cancer cardi/o heart carp/o wrist bones (carpals) cata- down caud/o tail; lower part of body caus/o burn; burning cauter/o heat; burn cec/o cecum (first part of the colon) -cele hernia celi/o belly; abdomen -centesis surgical puncture to remove fluid cephal/o head cerebell/o cerebellum (posterior part of the brain) cerebr/o cerebrum (largest part of the brain) cerumin/o cerumen cervic/o neck; cervix (neck of uterus) -chalasia relaxation -chalasis relaxation cheil/o lip chem/o drug; chemical -chezia defecation; elimination of wastes chir/o hand chlor/o green chlorhydr/o hydrochloric acid chol/e bile; gall cholangi/o bile vessel cholecyst/o gallbladder choledoch/o common bile duct cholesterol/o cholesterol chondr/o cartilage chore/o dance chori/o chorion (outermost membrane of the fetus) chorion/o chorion choroid/o choroid layer of eye chrom/o color chron/o time chym/o to pour cib/o meal -cide killing -cidal pertaining to killing cine/o movement cirrh/o orange-yellow cis/o to cut -clasis to break -clast to break claustr/o enclosed space clavicul/o clavicle (collar bone) -clysis irrigation; washing coagul/o coagulation (clotting) -coccus (-cocci, pl.) berry-shaped bacterium coccyg/o coccyx (tailbone) cochle/o cochlea (inner part of ear) col/o colon (large intestine) coll/a glue colon/o colon (large intestine) colp/o vagina comat/o deep sleep comi/o to care for con- together, with coni/o dust conjunctiv/o conjunctiva (lines the eyelids) -constriction narrowing contra- against; opposite cor/o pupil core/o pupil corne/o cornea coron/o heart corpor/o body cortic/o cortex, outer region cost/o rib crani/o skull cras/o mixture; temperament crin/o secrete -crine secrete; separate -crit to separate cry/o cold crypt/o hidden culd/o cul-de-sac -cusis hearing cutane/o skin cyan/o blue cycl/o ciliary body of eye; cycle; circle -cyesis pregnancy cyst/o urinary bladder; cyst; sac of fluid cyt/o cell -cyte cell -cytosis condition of cells; slight increase in numbers dacry/o tear dacryoaden/o tear gland dacryocyst/o tear sac; lacrimal sac dactyl/o fingers; toes de- lack of; down; less; removal of dem/o people dent/i tooth derm/o skin -derma skin dermat/o skin desicc/o drying -desis to bind, tie together dia- complete; through diaphor/o sweat -dilation widening; stretching; expanding dipl/o double dips/o thirst dist/o far; distant dors/o back (of body) dorsi- back -dote to give -drome to run duct/o to lead, carry duoden/o duodenum dur/o dura mater -dynia pain dys- bad; painful; difficult; abnormal -eal pertaining to ec- out; outside echo- reflected sound -ectasia stretching; dialation; expansion -ectasis stretching; dialation; expansion ecto- out; outside -ectomy removal; excision; resection -edema swelling -elasma flat plate electr/o electricity em- in -ema condition -emesis vomiting -emia blood condition -emic pertaining to blood condition emmetr/o in due measure en- in; within encephal/o brain endo- in; within enter/o intestines (usually small intestine) eosin/o red; rosy; dawn-colored epi- above; upon;/ on epididym/o epididymis epiglott/o epiglottis episi/o vulva (external female genitalia) epitheli/o skin; epithelium equin/o horse -er one who erg/o work erythem/o flushed; redness erythr/o red -esis condition eso- inward esphag/o esophagus esthes/o nervous sensation (feeling) esthesi/o nervous sensation -esthesia nervous sensation estr/o female ethm/o sieve eti/o cause eu- good; normal -eurysm widening ex- out; away from exanthemat/o rash exo- out; away from extra- outside faci- face fasci/o fascia (membrane supporting muscles) femor/o femur (thigh bone) -ferent to carry fibr/o fiber fibros/o fibrous connective tissue fibul/o fibula -fication process of making -fida split flex/o to bend fluor/o luminous follicul/o follicle; small sac -form resembling; in the shape of fung/i fungus; mushroom furc/o forking; branching -fusion to pour; to come together galact/o milk ganglion/o ganglion; collection of nerve cell bodies gastr/o stomach -gen producing; forming -genesis producing; forming -genic produced by or in ger/o old age gest/o pregnancy gester/o pregnancy gingiv/o gum glauc/o gray gli/o glue; neuroglial tissue (supportive tissue of nervous system) -globin protein -globulin protein glomerul/o glomerulus gloss/o tongue gluc/o glucose; sugar glyc/o glucose; sugar glycogen/o glycogen; animal starch glycos/o glucose; sugar gnos/o knowledge gon/o seed gonad/o sex glands goni/o angle -grade to go -gram record granul/o granule (s) -graph instrument for recording -graphy process of recording gravid/o pregnancy -gravida pregnant woman gynec/o woman; female hallucin/o hallucination hem/o blood hemat/o blood hemi- half hemoglobin/o hemoglobin hepat/o liver herni/o hernia -hexia habit hidr/o sweat hist/o tissue histi/o tissue home/o sameness; unchanging; constant hormon/o hormone humer/o humerus (upper arm bone) hydr/o water hyper- above; excessive hypn/o sleep hypo- sleep hypophys/o pituitary gland hyster/o uterus; womb -ia condition -iac pertaining to -iasis abnormal condition iatr/o physician; treatment -ic pertaining to -ical pertaining to ichthy/o dry; scaly -icle small idi/o unknown; individual; district ile/o ileum ili/o ilium immun/o immune; protection; safe in- in; into; not -in, -ine a substance -ine pertaining to infra- below; inferior to; beneath inguin/o groin insulin/o insulin (pancreatic hormone) inter- between intra- within; into iod/o iodine ion/o ion; to wander -ion process -ior pertaining to ipsi- same ir- in ir/o iris (colored portion of eye) irid/o iris (colored portion of eye) is/o same; equal isch/o to hold back; back ischi/o ischium (part of hip bone) -ism process; condition -ist specialist -itis inflammation -ium structure; tissue jaund/o yellow jejun/o jejunum kal/i potassium kary/o nucleus kerat/o horny, hard; cornea kern- nucleus (collection of nerve cells in the brain) ket/o ketones; acetones kenton/o ketones; acetones kines/o movement kinesi/o movement -kinesia movement -kinesis movement klept/o to steal kyph/o humpback labi/o lip lacrim/o tear; tear duct; lacrimal duct lact/o milk lamin/o lamina (part of vertebral arch) lapar/o abdominal wall; abdomen -lapse to slide, fall, sag laryng/o larynx (voice box) later/o side leiomy/o smooth (visceral) muscle -lemma sheath, covering -lepsy seizure lept/o thin, slender -leptic to seize, take hold of leth/o death leuk/o white lex/o word; phrase -lexia word; phrase ligament/o ligament lingu/o tongue lip/o fat; lipid -listhesis slipping lith/o stone; calculus -lithiasis condition of stones -lithotomy incision (for removal) of a stone lob/o lobe log/o study of -logy study of lord/o curve; swayback -lucent to shine lumb/o lower back; loin lute/o yellow lux/o to slide lymph/o lymph lymphaden/o lymph gland (node) lymphangi/o lymph vessel -lysis breakdown; separation; destruction; loosening -lytic to reduce, destroy; separate; breakdown macro- large mal- bad -malacia softening malleol/o malleolus mamm/o breast mandibul/o mandible (lower jaw bone) -mania obsessive preoccupation mast/o breast mastoid/o mastoid process (behind the ear) maxill/o maxilla (upper jaw bone) meat/o meatus (opening) medi/o middle mediastin/o mediastinum medull/o medulla (inner section); middle; soft, marrow mega- large -megaly enlargement melan/o black men/o menses; menstruation mening/o meninges (membranes covering the spinal cord and brain) meningi/o meninges ment/o mind; chin meso- middle meta- change; beyond metacarp/o metacarpals (hand bones) metatars/o metatarsals (foot bones) -meter measure metr/o uterus (womb); measure metri/o uterus (womb) mi/o smaller; less micro- small -mimetic mimic; copy -mission to send mon/o one; single morph/o shape; form mort/o death -mortem death -motor movement muc/o mucus mucos/o mucous membrane (mucosa) multi- many mut/a genetic change mutagen/o causing genetic change my/o muscle myc/o fungus mydr/o wide myel/o spinal cord; bone marrow myocardi/o myocardium (heart muscle) myom/o muscle tumor myos/o muscle myring/o tympanic membrane (eardrum) myx/o mucus narc/o numbness; stupor; sleep nas/o nose nat/i birth natr/o sodium necr/o death nect/o to bind, tie, connect neo- new nephr/o kidney neur/o nerve neutr/o neither; neutral; neutrophil nid/o nest noct/i night norm/o rule; order nos/o disease nucle/o nucleus nulli- none nyct/o night obstetr/o midwife ocul/o eye odont/o tooth odyn/o pain -oid resembling -ole little; small olecran/o olecranon (elbow) olig/o scanty om/o shoulder -oma tumor; mass; fluid collection omphal/o umbilicus (naval) onc/o tumor -one hormone onych/o nail (of fingers or toes) o/o egg oophor/o ovary -opaque obscure ophthalm/o eye -opia vision -opsia vision -opsy view of opt/o eye; vision optic/o eye; vision -or one who or/o mouth orch/o testis orchi/o testis orchid/o testis -orexia appetite orth/o straight -ose full of; pertaining to; sugar -osis condition, usually abnormal -osmia smell ossicul/o ossicle (small bone) oste/o bone -ostosis condition of bone ot/o ear -otia ear condition -ous pertaining to ov/o egg ovari/o ovary ovul/o egg ox/o oxygen -oxia oxygen oxy- swift; sharp; acid oxysm/o sudden pachy- heavy; thick palat/o palate (roof of the mouth) palpebr/o eyelid pan- all pancreat/o pancreas papill/o nipple-like; optic disc (disk) par- other than; abnormal para- near; beside; abnormal; apart from; along the side of -para to bear, bring forth (live births) -parous to bear, bring forth parathyroid/o parathyroid glands -paresis slight paralysis -pareunia sexual intercourse -partum birth; labor patell/a patella patell/o patella path/o disease -pathy disease; emotion pector/o chest ped/o child; foot pelv/i pelvic bone; hip pend/o to hang -penia deficiency -pepsia digestion per- through peri- surrounding perine/o perineum peritone/o peritoneum perone/o fibula -pexy fixation; to put in place phac/o lens of eye phag/o eat; swallow -phage eat; swallow -phagia eating; swallowing phak/o lens of eye phalang/o phalanges (fingers and toes) phall/o penis pharmac/o drug pharmaceut/o drug pharyng/o throat (pharynx) phas/o speech -phasia speech phe/o dusky; dark -pheresis removal phil/o like; love; attraction -phil attraction for -philia attraction for phim/o muzzle phleb/o vein phob/o fear -phobia fear phon/o voice; sound -phonia voice; sound -phor/o to bear -phoresis carrying; transmission -phoria to bear, carry; feeling (mental state) phot/o light phren/o diaphragm; mind -phthisis wasting away -phylaxis protection physi/o nature; function -physis to grow phyt/o plant -phyte plant pil/o hair pineal/o pineal gland pituitar/o pituitary gland -plakia plaque plant/o sole of the foot plas/o development; formation -plasia development; formation; growth -plasm formation -plastic pertaining to formation -plasty surgical repair ple/o more; many -plegia paralysis; palsy -plegic paralysis; palsy pleur/o pleura plex/o plexus; network (of nerves) -pnea breathing pneum/o lung; air; gas pneumon/o lung; air; gas pod/o foot -poiesis formation -poietin substance that forms poikil/o varied; irregular pol/o extreme polio- gray matter (of brain or spinal cord) poly- many; much polyp/o polyp; small growth pont/o pons (a part of the brain) -porosis condition of pores (spaces) post- after; behind poster/o back (of body); behind -prandial meal -praxia action pre- before; in front of presby/o old age primi- first pro- before; forward proct/o anus and rectum pros- before; forward prostat/o prostate gland prot/o first prote/o protein proxim/o near prurit/o itching pseudo- false psych/o mind -ptosis droop; sag; prolapse; fall -ptysis spitting pub/o pubis (anterior part of hip bone) pulmon/o lung pupill/o pupil (dark center of the eye) purul/o pus py/o pus pyel/o renal pelvis pylor/o pylorus; pyloric sphincter pyr/o fever; fire pyret/o fever pyrex/o fever quadri- four rachi/o spinal column; vertebrae radi/o x-rays; radioactivity; radius (lateral lower arm bone) radicul/o nerve root re- back; again; backward rect/o rectum ren/o kidney reticul/o network retin/o retina retro- behind; back; backward rhabdomy/o straited (skeletal) muscle rheumat/o watery flow rhin/o nose rhytid/o wrinkle roentgen/o x-rays -rrhage bursting forth (of blood) -rrhagia bursting forth (of blood) –rrhaphy suture -rrhea flow; discharge -rrhexis rupture rrhythm/o rhythm sacr/o sacrum salping/o fallopian tube; auditory (eustachian) tube -salpinx fallopian tube; oviduct sarc/o flesh (connective tissue) scapul/o scapula; shoulder blade -schisis to split schiz/o split scint/o spark scirrh/o hard scler/o sclera (white of eye); hard -sclerosis hardening scoli/o crooked; bent -scope instrument for visual examination -scopy visual examination scot/o darkness seb/o sebum sebace/o sebum sect/o to cut semi- half semin/i semen; seed seps/o infection sial/o saliva sialaden/o salivary gland sider/o iron sigmoid/o sigmoid colon silic/o glass sinus/o sinus -sis state of; condition -sol solution somat/o body -some body somn/o sleep -somnia sleep son/o sound -spadia to tear; cut -spasm sudden contraction of muscles sperm/o spermatozoa; sperm cells spermat/o spermatozoa; sperm cells sphen/o wedge; sphenoid bone spher/o globe-shaped; round sphygm/o pulse -sphyxia pulse splanchn/o viscera (internal organs) spin/o spine (backbone) spir/o to breathe splen/o spleen spondyl/o vertebra (backbone) squam/o scale -stalsis contraction staped/o stapes (middle ear bone) staphyl/o clusters; uvula -stasis to stop; control; place -static pertaining to stopping; controlling steat/o fat, sebum -stenosis tightening; stricture ster/o solid structure; steroid stere/o solid; three-dimensional stern/o sternum (breastbone) steth/o chest -sthenia strength -stitial to set; pertaining to standing or positioned stomat/o mouth -stomia condition of the mouth -stomy new opening (to form a mouth) strept/o twisted chains styl/o pole or stake sub- under; below submaxill/o mandible (lower jaw bone) -suppression to stop supra- above, upper sym- together; with syn- together; with syncop/o to cut off, cut short; faint syndesm/o ligament synov/o synovia; synovial membrane; sheath around a tendon syring/o tube tachy- fast tars/o tarsus; hindfoot or ankle (7 bones between the foot and the leg) tax/o order; coordination tel/o complete tele/o distant ten/o tendon tendin/o tendon -tension pressure terat/o monster; malformed fetus test/o testis (testicle) tetra- four thalam/o thalamus thalass/o sea the/o put; place thec/o sheath thel/o nipple therapeut/o treatment -therapy treatment therm/o heat thorac/o chest -thorax chest; pleural cavity thromb/o clot thym/o thymus gland -thymia mind (condition of) -thymic pertaining to mind thyr/o thyroid gland; shield thyroid/o thyroid gland tibi/o tibia (shin bone) -tic pertaining to toc/o labor; birth -tocia labor; birth (condition of) -tocin labor; birth (a substance for) tom/o to cut -tome instrument to cut -tomy process of cutting ton/o tension tone/o to stretch tonsill/o tonsil top/o place; position; location tox/o poison toxic/o poison trache/o trachea (windpipe) trans- across; through -tresia opening tri- three trich/o hair trigon/o trigone (area within the bladder) -tripsy to crush troph/o nourishment; development -trophy nourishment; development -tropia to turn -tropic turning -tropin stimulate; act on tympan/o tympanic membrane (eardrum); middle ear -type classification; picture -ule little; small uln/o ulna (medical lower arm bone) ultra- beyond; excess -um structure; tissue; thing umbilic/o umbilicus (navel) ungu/o nail uni- one ur/o urine; urinary tract ureter/o ureter urethr/o urethra -uria urination; condition of urine urin/o urine -us structure; thing uter/o uterus (womb) uve/o uvea, vascular layer of eye (iris, choroid, ciliary body) uvul/o uvula vag/o vagus nerve vagin/o vagina valv/o valve valvul/o valve varic/o varicose veins vas/o vesel; duct; vas deferens vascul/o vessel (blood) ven/o; ven/i vein vener/o venereal (sexual contact) ventr/o belly side of body ventricul/o ventricle (of heart or brain) venul/o venule (small vein) -verse to turn -version to turn vertebr/o vertebra (backbone) vesic/o urinary bladder vesicul/o seminal vesicle vestibul/o vestibule of the inner ear viscer/o internal organs vit/o life vitr/o vitreous body (of the eye) vitre/o glass viv/o life vol/o to roll vulv/o vulva (female external genitalia) xanth/o yellow xen/o stranger xer/o dry xiph/o sword -y condition; process zo/o animal life
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