Medical Terminology

Prefixes


Prefix

Definition

a

without or absence of

ab

from; away from

ad

to; toward

an

without or absence of

ana

up; again; backward

ante

before

anti

against

apo

upon

bi

two

bin

two

brady

slow

cata

down

con

together

contra

against

de

from; down from; lack of

dia

thorough; complete

dis

to undo; free from

dys

difficult; labored; painful; abnormal

ecto

outside; outer

endo

within

epi

on; upon; over

eso

inward

eu

normal; good

ex

outside; outward

exo

outside; outward

extra

outside of; beyond

hemi

half

hyper

above; excessive

hypo

below; incomplete; deficient

in

in; into; not

infra

under; below

inter

between

intra

within

mal

bad

meso

middle

meta

after; beyond; change

micro

small

multi

many

neo

new

nulli

none

pan

all; total

para

beside; beyond; around

per

through

peri

surrounding (outer)

poly

many; much

post

after

pre

before; in front of

pro

before

re

back

retro

back; behind

semi

half

sub

under; below

super

over; above

supra

above

sym

together; joined

syn

together; joined

tachy

fast; rapid

tetra

four

trans

through; across; beyond

tri

three

ultra

beyond; excess

uni

one



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