Common Medical Prefixes

a-, an-

negative, without

ab-

away from

ad-

towards

anti-

against

ante-

before

bi-

two, both

brachy-

short

brady-

slow

dys-

painful, difficult

dors-

back

endo-

inside

epi-

above, upon

hemi-

half

hyper-

excessive, above, more than

hypo-

decrease, below, less

inter-

between, among

intra-

within, inside

macro-

large, big

micro-

small

neo-

new

para-

beside or below

peri-

around

poly-

many

post-

after

sub-

below

super-

above

tachy-

fast