Medical Terminology - Prefixes

a-, an-

without, not

ab-

away from

ad-

toward

aniso-

unequal, dissimilar

anti-

against

auto-

self, own

bi-

two

brady-

slow

circum-

around

contra-

against

crypt-

hidden

dia-

through, across

dipl-, diplo-

double

dys-

bad, painful, difficult

en-, end-, endo-

in, within

epi-

above, upon

eso-

inward

eu-

good, normal

ex-

out, out from

exo-

outside, outward

hemi-

one half

hetero-

different

hidr-

sweat

homo-

same

homeo-

same

hydro-

water

hyper-

excessive, above normal

hypo-

under, below, deficient

inter-

between

intra-

within

macro-

large

mal-

bad

meta-

beyond, change

micro-

small

mono-

one

multi-

many, much

neo-

new

noct-

night

nulli-

none

para-

beside, near, beyond

peri-

around

poly-

many, much

post-

after, behind

pre-

before, in front of

pro-

before, in front of

presby-

old age

primi-

first

pseudo-

false

quadri-

four

retro-

behind, backward

sub-

under, below

super-

above, upper

supra-

above, excessive

syn-

union, together, joined

tachy-

fast

trans-

across, through

tri-

three

ultra-

excessive, beyond

uni-

one

xeno-

strange, foreign