Term | Definition |
abdomin/o | abdomen |
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 |
aden/o | gland |
adenoid/o | adenoids |
adip/o | fat |
adren/o | adrenal gland |
adrenal/o | adrenal gland |
aer/o | air |
agglutin/o | clumping; sticking together |
alb/o | white |
albin/o | white |
albumin/o | albumin (protein) |
alges/o | sensitivity to pain |
all/o | other |
alveol/o | alveolus; air sac; small sac |
ambly/o | dim; dull |
amni/o | amnion (sac surrounding the embryo) |
amyl/o | starch |
an/o | anus |
andr/o | male |
aneurysm/o | aneurysm (widened blood vessel) |
angi/o | vessel (blood) |
anis/o | unequal |
ankyl/o | stiff |
anter/o | front |
anthrac/o | coal |
anthr/o | antrum of the stomach |
anxi/o | uneasy; anxious |
aort/o | aorta (largest artery) |
aphth/o | ulcer |
aponeur/o | aponeurosis (type of tendon) |
append/o | appendix |
appendic/o | appendix |
aque/o | water |
arter/o | artery |
arteri/o | artery |
arteriol/o | arteriole (small artery) |
arthr/o | joint |
articul/o | joint |
asbest/o | asbestos |
atel/o | incomplete |
ather/o | plaque (fatty substance) |
atri/o | atrium (upper heart chamber) |
audi/o | hearing |
audit/o | hearing |
aur/o | ear |
auricul/o | ear |
aut/o | 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/o | life |
bil/i | bile; gall |
bilirubin/o | bilirubin |
blephar/o | eyelid |
bol/o | cast; throw |
brachi/o | arm |
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 |
calcane/o | calcaneus (heel bone) |
calci/o | calcium |
cali/o, calic/o | calyx (cup-shaped) |
capillar/o | capillary (tiniest blood vessel) |
capn/o | carbon dioxide |
carcin/o | cancerous; cancer |
cardi/o | heart |
carp/o | wrist bones (carpals) |
caud/o | tail; lower part of body |
caus/o | burn; burning |
cauter/o | heat; burn |
cec/o | cecum (first part of the colon) |
celi/o | belly; abdomen |
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) |
cheil/o | lip |
chem/o | drug; chemical |
chir/o | hand |
chlor/o | green |
chloryhydr/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 |
cine/o | movement |
cirrh/o | orange-yellow |
cis/o | to cut |
claustr/o | enclosed space |
clavicul/o | clavicle (collar bone) |
coagul/o | coagulation (clotting) |
coccyg/o | coccyx (tailbone) |
cochle/o | cochlea (inner part of ear) |
col/o | colon |
coll/a | glue |
colon/o | colon (large intestine) |
colp/o | vagina |
comat/o | deep sleep |
comi/o | to care for |
coni/o | dust |
conjunctiv/o | conjunctive (lines the eyelids) |
cor/o | pupil |
core/o | pupil |
corne/o | cornea |
coron/o | heart (crown or circle) |
corpor/o | body |
cortic/o | cortex, outer region |
cost/o | rib |
crani/o | skull |
cras/o | mixture; temperament |
crin/o | secrete |
cry/o | cold |
crypt/o | hidden |
culd/o | cul-de-sac |
cutane/o | skin |
cyan/o | blue |
cycl/o | ciliary body of eye; cycle; circle |
cyst/o | urinary bladder; cyst; sac of fluid |
cyt/o | cell |
dacry/o | tear |
dacryoaden/o | tear gland |
dacryocyst/o | tear sac; lacrimal sac |
dactyl/o | fingers; toes |
dem/o | people |
dent/i | tooth; teeth |
derm/o | skin |
dermat/o | skin |
desicc/o | drying |
diaphor/o | sweat |
dipl/o | double |
dips/o | thirst |
dist/o | far; distant |
dors/o | back (of body) |
duct/o | to lead, carry |
duoden/o | duodenum |
dur/o | dura matter |
electr/o | electricity |
emmetr/o | in due measure |
encephal/o | brain |
enter/o | intestines (usually small intestine) |
eosin/o | red; rosy; dawn-colored |
epididym/o | epididymis |
epiglott/o | epiglottis |
episi/o | vulva (external female genitalia) |
epitheli/o | skin; epithelium |
equin/o | horse |
erg/o | work |
erythem/o | flushed; redness |
erythr/o | red |
esophag/o | esophagus |
esthes/o | feeling (nervous sensation) |
esthesi/o | feeling (nervous sensation) |
estr/o | female |
ethm/o | sieve |
eti/o | cause |
exanthemat/o | rash |
faci/o | face |
fasci/o | fascia (membrane supporting muscles) |
femor/o | femur (thigh bone) |
fibrin/o | fiber |
fibr/o, fibromat/o | fiber |
fibros/o | fibrous connective tissue |
fibul/o | fibula |
flex/o | bend |
fluor/o | luminous |
follicul/o | follicle; small sac |
fung/i | fungus; mushroom (lower organism lacking chlorophyll) |
furc/o | forking; branching |
galact/o | milk |
ganglion/o | ganglion; collection of nerve cell bodies |
gastr/o | stomach |
ger/o | old age |
geront/o | old age |
gest/o | pregnancy |
gester/o | pregnancy |
gingiv/o | gum |
glauc/o | gray |
gli/o | glial cells; neurological cells (supportive tissue of nervous system) |
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 |
granul/o | granule(s) |
gravid/o | pregnancy |
gynec/o | woman; female |
hallucin/o | hallucination |
hem/o | blood |
hemat/o | blood |
hemoglobin/o | hemoglobin |
hepat/o | liver |
herni/o | hernia |
hidr/o | sweat |
hist/o, histi/o | tissue |
home/o | sameness; unchanging; constant |
hormon/o | hormone |
humer/o | humerus (upper arm bone) |
hydr/o | water |
hypn/o | sleep |
hypophys/o | pituitary gland |
hyster/o | uterus; womb |
iatr/o | physician; treatment |
ichthy/o | dry; scaly |
idi/o | unknown; individual; distinct |
ile/o | ileum |
ili/o | ilium |
immun/o | immune; protection; safe |
inguin/o | groin |
insulin/o | insulin (pancreatic hormone) |
iod/o | iodine |
ion/o | ion; to wander |
ir/o | iris (colored portion of eye) |
irid/o | iris (colored portion of eye) |
is/o | same; equal |
isch/o | hold back; back |
ichi/o | ichium (part of the hip bone) |
jaund/o | yellow |
jejun/o | jejunum |
kal/i | potassium |
kary/o | nucleus |
kerat/o | cornea; hard, horny tissue |
ket/o | ketones; acetones |
keton/o | ketones; acetones |
kines/o | movement |
kinesi/o | 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 |
laryng/o | larynx (voice box) |
later/o | side |
leiomy/o | smooth (visceral) muscle |
lept/o | thin, slender |
leth/o | death |
leuk/o | white |
lex/o | word; phrase |
ligament/o | ligament |
lingu/o | tongue |
lip/o | fat (a type of lipid) |
lipid/o | lipid |
lith/o | stone; calculus |
lob/o | lobe |
log/o | study |
lord/o | curve; swayback |
lumb/o | lower back; loin |
lute/o | yellow |
lux/o | slide |
lymph/o | lymph |
lymphaden/o | lymph gland (node) |
lymphangi/o | lymph vessel |
malleol/o | malleolus |
mamm/o | breast |
mandibul/o | mandible (lower jaw bone) |
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 | medastinum |
medull/o | medulla (inner section); middle; soft, marrow |
melan/o | black |
men/o | menses; menstruation |
mening/o | meninges (membranes covering the spinal cord and brain) |
meningi/o | meninges |
ment/o | mind; chin |
metacarp/o | metacarpals (hand bones) |
metatars/o | metatarsals (foot bones) |
metr/o | uterus (womb); measure |
metri/o | uterus (womb) |
mi/o | smaller; less |
mon/o | one; single |
morph/o | shape; form |
mort/o | death |
muc/o | mucus |
mucos/o | mucous membrane (mucosa) |
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 | bind, tie, connect |
nephr/o | kidney |
neur/o | nerve |
neutr/o | neither; neutral; neutrophil |
nid/o | nest |
noct/o | night |
norm/o | rule; order |
nos/o | disease |
nucle/o | nucleus |
nyct/o | night |
obstetr/o | pregnancy; childbirth |
ocul/o | eye |
odont/o | tooth |
odyn/o | pain |
olecran/o | olecranon (elbow) |
olig/o | scanty |
om/o | shoulder |
omphal/o | umbilicus (navel) |
onc/o | tumor |
onych/o | nail (of fingers or toes) |
o/o | egg |
oophor/o | ovary |
ophthalm/o | eye |
opt/o | eye; vision |
optic/o | eye; vision |
or/o | mouth |
orch/o | testis |
orchi/o | testis |
orchid/o | testis |
phak/o | lens of eye |
phalang/o | phalanges (of fingers and toes) |
phall/o | penis |
pharmac/o | drug |
pharmaceut/o | drug |
pharyng/o | throat (pharynx) |
phas/o | speech |
phe/o | duscky; dark |
phil/o | like; love; attraction to |
phim/o | muzzle |
phleb/o | vein |
phob/o | fear |
phon/o | voice; sound |
phor/o | to bear |
phot/o | light |
phren/o | diaphragm; mind |
physi/o | nature; function |
phys/o | growing |
phyt/o | plant |
pil/o | hair |
pineal/o | pineal gland |
pituitar/o | pituitary gland |
plant/o | sole of the foot |
plas/o | development; formation; growth |
ple/o | more; many; varied |
pleur/o | pleura |
plex/o | plexus; network (of nerves) |
pneum/o | lung; air; gas |
pneumon/o | lung; air; gas |
pod/o | foot |
poikil/o | varied; irregular |
pol/o | extreme |
polyp/o | polyp; small growth |
pont/o | pons (a part of the brain) |
poster/o | back (of body); behind |
presby/o | old age |
proct/o | anus and rectum |
prostat/o | prostate gland |
prot/o | first |
prote/o | protein |
proxim/o | near |
prurit/o | itching |
psych/o | mind |
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 |
rachi/o | spinal column; vertebrae |
radi/o | x-rays; radioactivity; radius (lateral lower arm bone) |
radicul/o | nerve root |
rect/o | rectum |
ren/o | kidney |
reticul/o | network |
retin/o | retina |
rhabdomy/o | striated (skeletal) muscle |
rheumat/o | watery flow |
rhin/o | nose |
rhytid/o | wrinkle |
roentgen/o | x-rays |
rrhythm/o | rhythm |
sacr/o | sacrum |
sarc/o | flesh (connective tissue) |
scapul/o | scapula; shoulder blade |
schiz/o | split |
scint/i | spark |
scirrh/o | hard |
scler/o | sclera (white of eye); hard |
scoli/o | crooked; bent |
scot/o | darkness |
seb/o | sebum |
sebace/o | sebum |
sect/o | half |
semin/i | semen; seed |
seps/o | infection |
sial/o | saliva; salivary gland |
sialaden/o | salivary gland |
sider/o | iron |
sigmoid/o | sigmoid colon |
silic/o | glass |
sinus/o | sinus |
somat/o | body |
somn/o | sleep |
son/o | sound |
sperm/o | spermatozoa; sperm cells |
spermat/o | spermatozoa; sperm cells |
sphen/o | wedge; sphenoid bone |
spher/o | globe-shaped; round |
sphygm/o | pulse |
splanchn/o | viscera (internal organs) |
spin/o | spine (backbone) |
spir/o | to breathe |
splen/o | spleen |
thromb/o | clot |
thym/o | thymus gland |
thyr/o | thyroid gland; shield |
thyroid/o | thyroid gland |
tibi/o | tibia (shin bone) |
toc/o | labor; birth |
tom/o | to cut |
ton/o | tension |
tone/o | to stretch |
tonsill/o | tonsil |
top/o | position; place; locations |
tox/o | poison |
toxic/o | poison |
trache/o | trachea (windpipe) |
trich/o | hair |
trigon/o | trigone (area within the bladder) |
troph/o | nourishment; development |
tympan/o | tympanic membrane (eardrum); middle ear |
uln/o | ulna (medial lower arm bone) |
umbilic/o | umbilicus (navel) |
ungu/o | nail |
ur/o | urine; urinary tract |
ureter/o | ureter |
urethr/o | urethra |
urin/o | urine |
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 |
varic/o | varicose veins |
vas/o | vessel; 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) |
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 |
zo/o | animal life |