Med Term PREFIXES

a-

not, without, lack of

a-

before roots with a constant

an-

not, without, lack of

an-

before roots with a vowel

ante-

before, in front of

anti-

against, opposing

auto-

self, same

brady-

slow

circum-

around

contra-

against, opposite

de-

down, away from, removal

dia-

through, completely, thoroughly

dys-

bad, painful, difficult, abnormal

ecto-

outside

endo-

within, inner, inside

epi-

upon, above, on top of, near

eso-

inward, inside

eu-

good, normal, well

ex-

out, out from, away

exo-

outside, outward

extra-

outside, beyond

hemi-

half

hetero-

opposite, different

hydro-

water, fluid

hyper-

above, excessive, abnormally high

hypo-

below, deficient, abnormally low

in-

not, in, into

inter-

between

intra-

within, inside

macro-

large, long

micro-

small

myo-

muscle

neo-

new

oligo-

few, scanty

pan-

all, entire

para-

beside, near, abnormal

homo-

same, alike

per-

through, throughout

peri-

around, surrounding

post-

after, behind

pre-

before, in front of

pro-

before, forward

pseudo-

false

ri-

again, back

retro-

backward, behind

sub-

under, below, beneath

supra-

above, upper

sym-

together, with

syn-

together, with

tachy-

fast, rapid

trans-

across, through

ultra-

beyond, excess

un-

not, reversal

bi-

two, double

deca-

ten

mono-

one, single

multi-

many, much

nulli-

none

poly-

many, excessive

primi-

first

quadri-

four

semi-

half, partial

tetra-

four

tri-

three

uni-

one

ad-

toward

di-

two, twice, double

meta-

change, beyond