| Word prefix, root, or suffix |
Meaning |
| af- |
toward |
| ante- |
before |
| anti- |
against, resisting |
| auto- |
self |
| bi- |
two, double |
| circum- |
around |
| co- |
with, together |
| con- |
with, together |
| contra- |
against |
| de- |
down from, undoing |
| dia- |
across, through |
| dipl- |
twofold, double |
| dys- |
bad, disordered, difficult |
| ectop- |
displaced |
| -al |
pertaining to |
| -ac |
pertaining to |
| -algia |
pain |
| -aps |
fit, fasten |
| -apt |
fit, fasten |
| -arche |
beginning, origin |
| -ase |
signifies an enzyme |
| -blast |
sprout, make |
| -centesis |
a piercing |
| -cide |
to kill |
| -clast |
break, destroy |
| -crine |
release, secrete |
| -ectomy |
a cutting out |
| -emesis |
vomiting |
| -emia |
refers to a blood condition |
| -flux |
flow |
| -gen |
creates, forms |
| acro- |
extremity |
| aden- |
gland |
| alveol- |
small hollow cavity |
| angi- |
vessel |
| arthr- |
joint |
| asthen- |
weakness |
| bar- |
pressure |
| bili- |
bile |
| brachi- |
arm |
| brady- |
slow |
| bronch- |
air passage |
| capn- |
smoke |
| carcin- |
cancer |
| card- |
heart |
| cephal- |
head, brain |
| cerv- |
neck |
| chem- |
chemical |
| chol- |
bile |
| chondr- |
cartilage |
| corp- |
body |
| cortico- |
pertaining to cortex |
| crani- |
skull |
| crypt- |
hidden |
| cusp- |
point |
| cut(an)- |
skin |
| cyan- |
blue |
| cyst- |
bladder |
| cyt- |
cell |
| dactyl- |
fingers, toes (digits) |
| dendr- |
tree; branched |
| ef- |
away from |
| em- |
in, into |
| en- |
in, into |
| endo- |
within |
| epi- |
upon |
| eu- |
good |
| ex- |
out of, out from |
| exo- |
out of, out from |
| extra- |
outside of |
| hapl- |
single |
| hem- |
blood |
| hemat- |
blood |
| hemi- |
half |
| hom(e)o- |
same, equal |
| hyper- |
over, above |
| hypo- |
under, below |
| infra- |
below, beneath |
| inter- |
between |
| -genesis |
creation, production |
| -gram |
something written |
| -graphy(y) |
to write, draw |
| -hydrate |
containing water |
| -ia |
condition, process |
| -sia |
condition, process |
| -iasis |
abnormal condition |
| -ic |
pertaining to |
| -ac |
pertaining to |
| -in |
signifies a protein |
| -ism |
signifies "condition of" |
| -itis |
signifies "inflammation of" |
| -lemma |
rind; peel |
| -lepsy |
seizure |
| -lith |
stone; rock |
| -logy |
study of |
| -luna |
moon, moonlike |
| dent- |
tooth |
| derm- |
skin |
| diastol- |
relax; stand apart |
| dips- |
thirst |
| ejacul- |
to throw out |
| electr- |
electrical |
| enter- |
intestine |
| eryth(r)- |
red |
| esthe- |
sensation |
| febr- |
fever |
| gastr- |
stomach |
| gingiv- |
gums |
| glomer- |
wound into a ball |
| gloss- |
tongue |
| gluc- |
glucose, sugar |
| glutin- |
glue |
| glyc- |
sugar (carbohydrate); glucose |
| hepat- |
liver |
| hist- |
tissue |
| hydro- |
water |
| hyster- |
uterus |
| iatr- |
treatment |
| kal- |
potassium |
| kary- |
nucleus |
| kerat- |
cornea |
| lact- |
milk; milk production |
| lapar- |
abdomen |
| leuk- |
white |
| lig- |
to tie, bind |
| lip- |
lipid (fat) |
| intra- |
within |
| iso- |
same, equal |
| macro- |
large |
| mega- |
large, million(th) |
| mes- |
middle |
| meta- |
beyond, after |
| micro- |
small; million(th) |
| milli- |
thousandth |
| mono- |
one (single) |
| neo- |
new |
| non- |
not |
| oligo- |
few, scanty |
| ortho- |
straight; correct, normal |
| para- |
by the side of; near |
| per- |
through |
| -malacia |
softening |
| -megaly |
enlargement |
| -metric |
measurement, length |
| -metry |
measurement, length |
| -oid |
like; in the shape of |
| -oma |
tumor |
| -opia |
vision, vision condition |
| -oscopy |
viewing |
| -ose |
signifies a carbohydrate (especially a sugar) |
| -osis |
condition, process |
| -ostomy |
formation of an opening |
| -otomy |
cut |
| -penia |
lack |
| -philic |
loving |
| -phobic |
fearing |
| -phragm |
partition |
| lys- |
break apart |
| mal- |
bad |
| melan- |
black |
| men- |
month (monthly) |
| mens- |
month (monthly) |
| menstru- |
month (monthly) |
| muta- |
change |
| my- |
muscle |
| myo- |
muscle |
| myc- |
fungus |
| myel- |
marrow |
| nat- |
birth |
| natr- |
sodium |
| nephr- |
nephron, kidney |
| noct- |
night |
| nyct- |
night |
| ocul- |
eye |
| odont- |
tooth |
| onco- |
cancer |
| ophthalm- |
eye |
| orchid- |
testis |
| osteo- |
bone |
| oto- |
ear |
| ov- |
egg |
| oo- |
egg |
| oxy- |
oxygen |
| path- |
disease |
| ped- |
children |
| phag- |
eat |
| pharm- |
drug |
| phleb- |
vein |
| photo- |
light |
| physio- |
nature (function) of |
| plex- |
twisted; woven |
| pneumo- |
air, breath |
| semini |
semen testis |
| peri- |
around |
| poly- |
many |
| post- |
after |
| pre- |
before |
| pro- |
first; promoting |
| quadr- |
four |
| re- |
back again |
| retro- |
behind |
| semi- |
half |
| sub- |
under |
| super- |
over, above, excessive |
| supra- |
over, above, excessive |
| trans- |
across, through |
| tri- |
three; triple |
| -plasia |
growth, formation |
| -plasm |
substance, matter |
| -plasty |
shape, make |
| -plegia |
paralysis |
| -pnea |
breath, breathing |
| -(r)rhage |
breaking out, discharge |
| -(r)rhagia |
breaking out, discharge |
| -(r)rhapy |
sew, suture |
| -(r)rhea |
flow |
| -some |
body |
| -tensin |
pressure |
| -tension |
pressure |
| -tonic |
pressure, tension |
| -tripsy |
crushing |
| -ule |
small, little |
| -uria |
refers to urine condition |
| pneumon- |
lung |
| pod- |
foot |
| poie- |
make; produce |
| presby- |
old |
| proct- |
rectum |
| pseud- |
false |
| psych- |
mind |
| pyel- |
pelvis |
| ren- |
kidney |
| rhino- |
nose |
| rigor- |
stiffness |
| sarco- |
flesh; muscle |
| scler- |
hard |
| semen- |
seed, sperm |
| semin- |
seed, sperm |
| sept- |
contamination |
| sin- |
cavity; recess |
| son- |
sound |
| spiro- |
breathe |
| spire- |
breathe |
| stat- |
a standing, stopping |
| stas- |
a standing, stopping |
| syn- |
together |
| systol- |
cotract; stand together |
| tachy- |
fast |
| therm- |
heat |
| thromb- |
clot |
| tox- |
poison |
| troph- |
grow, nourish |
| tympan- |
drum |
| varic- |
enlarged vessel |
| vas- |
vessel, duct |
| vesic- |
bladder, blister |
| y |
process, condition |
| bi/o |
life |
| auto- |
self |
| a-, an |
no, not, without |
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