Medical Terminology: Prefixes

Front 1

a-

Back 1

without or absence of

Front 2

ab-

Back 2

away from, negative, absent

Front 3

ad-

Back 3

toward, near

Front 4

ambi-

Back 4

both, both sides

Front 5

an-

Back 5

without or absence of

Front 6

ana-

Back 6

up; again; backward

Front 7

ante-

Back 7

before

Front 8

anti-

Back 8

against

Front 9

apo-

Back 9

upon, away, separation

Front 10

auto-

Back 10

self

Front 11

bi-

Back 11

two

Front 12

brady-

Back 12

slow

Front 13

cata-

Back 13

down

Front 14

circum-

Back 14

around

Front 15

con-

Back 15

together, with

Front 16

contra-

Back 16

against

Front 17

de-

Back 17

from; down from; lack of

Front 18

dia-

Back 18

thorough

Front 19

dis-

Back 19

apart, to separate

Front 20

dys-

Back 20

difficult; labored; painful; abnormal

Front 21

ec-

Back 21

out, out from

Front 22

ecto-

Back 22

outside, outer

Front 23

endo-

Back 23

within, inside of

Front 24

epi-

Back 24

on; upon; over

Front 25

eso-

Back 25

inward, within

Front 26

eu-

Back 26

normal, good

Front 27

ex-

Back 27

out from

Front 28

exo-

Back 28

outside; outward

Front 29

extra-

Back 29

outside of; beyond

Front 30

fore-

Back 30

before, in front

Front 31

hemi-

Back 31

half

Front 32

hetero-

Back 32

different

Front 33

homo-

Back 33

same

Front 34

hyper-

Back 34

above; excessive

Front 35

hypo-

Back 35

below; incomplete; deficient

Front 36

im-

Back 36

not

Front 37

in-

Back 37

in; into; not

Front 38

infra-

Back 38

under; below

Front 39

inter-

Back 39

between; among

Front 40

intra-

Back 40

within, inside

Front 41

iso-

Back 41

same

Front 42

juxta-

Back 42

near

Front 43

macro-

Back 43

large

Front 44

mal-

Back 44

bad; poor

Front 45

meso-

Back 45

middle

Front 46

meta-

Back 46

after; beyond; change

Front 47

micro-

Back 47

small

Front 48

mid-

Back 48

middle

Front 49

mono-

Back 49

one

Front 50

multi-

Back 50

many

Front 51

neo-

Back 51

new

Front 52

nulli-

Back 52

non

Front 53

pachy-

Back 53

thick

Front 54

pan-

Back 54

all; total

Front 55

par-

Back 55

bear; give birth to; labor

Front 56

para-

Back 56

beside; beyond; around

Front 57

part-

Back 57

bear; give birth to; labor

Front 58

per-

Back 58

through, throughout

Front 59

peri-

Back 59

through, around

Front 60

poly-

Back 60

many; much

Front 61

post-

Back 61

after

Front 62

pre-

Back 62

before; in front of

Front 63

pro-

Back 63

before

Front 64

pseudo-

Back 64

fake; false

Front 65

re-

Back 65

back, again

Front 66

retro-

Back 66

back; behind

Front 67

semi-

Back 67

half

Front 68

sub-

Back 68

under; below

Front 69

super-

Back 69

above, beyond

Front 70

supra-

Back 70

above, beyond

Front 71

sym-

Back 71

together; joined

Front 72

syn-

Back 72

together; joined

Front 73

tachy-

Back 73

fast; rapid

Front 74

tetra-

Back 74

four

Front 75

trans-

Back 75

through; across; beyond

Front 76

tri-

Back 76

three

Front 77

ultra-

Back 77

beyond; excess

Front 78

uni-

Back 78

one