Scientific/Medical Terminology - Module 8 Latin Prefixes

ab- ( a- rarely before certain consonants; abs- before c and t )

away from

ad- (ac- before c ; af- before f ; ag- before g ; al- before l ; an- before n ; ap- before p ; as- before s ; a before sp ; at- before t)

to, toward

ambi-

both

ante-

before, forward

bi- (bin-, bis-)

two, twice, double, both

circum-

around

con- (co- before h ; col- before l ; com- before e , m , and p ; cor- before r)

together, with; thoroughly, very

contra-

against, opposite

de-

down, away from, absent

dis- (di- before g, v, and usually before l; dif- before f)

apart, away

ex- (e- before certain consonants; ef- before f)

out of, away from

extra- (rarely extro-)

on the outside, beyond

in- (il- before l; im- before b, m, and p; ir- before r)

(1) in, into

(2) not

(3) very, thoroughly

infra-

below, beneath

inter-

between

intra- (rarely intro-)

within

non-

not

mult- (often multi-)

many, much, affecting many parts

ob- (oc- before c; op- before p)

against, toward, very, thoroughly

per- (pel- before l)

through, very, thoroughly

post-

after, following, behind

pre-

before, in front of

pro-

forward, in front

re-

back, again

retro-

backward, in back, behind

se-

apart, away from

semi-

half

sub- (suf- before f; sup- before p)

under

super- (often supra-)

over, above, excess

trans-

across, through

ultra-

beyond, excess

uni-

bi-, bin-, bis-

tri-

quadr-

quint-

sex-, sext-

sept-

oct-, octa-

non-

dec-, deca-

one

two, twice, double, both

three

four

five, fifth

six, sixth

seven

eight

nine, ninth

ten, one-tenth