Medical Terminology-(Prefixes)

a-,an-

without

ab-

away from

ad-

toward

ante-

before

anti-

against

aut-

self

bi-

two,both

brady-

slow

circum-

round

contra-

against

di-

two

diplo-

double

dys-

painful, difficult

ecto-

outside

endo-, intra-

inside

epi-

above, upper

hemi-

half

hyper-

excessive, above, more than

hypo-

below, less than, deficient

inter-

between

later-

side

lipo-

fat

mal-

bad, difficult

mega-/macro-

large

micro-

small

mono-, uni-

one, single

neo-

new

ortho-

straight

peri-

around

poly-

many, much

post-

behind, after

pre-

in front of, before

pro-

forward

pseudo-

false

retro-

backward, behind

semi-

half

sub-

below

tachy-

fast

tele-

distant, far

trans-

across

ultra-

beyond, excessive