Medical Terminology Prefixes

Front 1

a

Back 1

without; not; away from

Front 2

ab-

Back 2

from; away from; absent

Front 3

ad-

Back 3

toward; increase

Front 4

alb-

Back 4

white

Front 5

ambi-

Back 5

both; both sides

Front 6

an-

Back 6

w/out; not

Front 7

ana-

Back 7

not; w/out; against

Front 8

aniso-

Back 8

unequal

Front 9

ante-

Back 9

before; in front

Front 10

anti-

Back 10

against

Front 11

auto-

Back 11

self

Front 12

bi-

Back 12

two; double

Front 13

bio-

Back 13

life

Front 14

brady-

Back 14

slow

Front 15

cata-

Back 15

down; under against; lower

Front 16

cine-

Back 16

movement

Front 17

circum-

Back 17

around

Front 18

con-

Back 18

together; with

Front 19

contra-

Back 19

against

Front 20

de-

Back 20

down; from

Front 21

dia-

Back 21

through; between

Front 22

dis-

Back 22

free of; to undo; double; negative

Front 23

dys-

Back 23

bad; difficult; painful; disordered

Front 24

echo-

Back 24

sound

Front 25

ecto-

Back 25

outside

Front 26

endo-

Back 26

within; inner

Front 27

epi-

Back 27

upon; over; after

Front 28

eu-

Back 28

well; easily; good; normal

Front 29

ex-

Back 29

away from; outside

Front 30

exo-

Back 30

outward

Front 31

extra-

Back 31

outside; beyond

Front 32

hemi-

Back 32

half

Front 33

homeo-

Back 33

likeness; same

Front 34

homo-

Back 34

same

Front 35

hydro-

Back 35

water

Front 36

hyper-

Back 36

excessive; above

Front 37

hypno-

Back 37

sleep; hypnosis

Front 38

hypo-

Back 38

under; below; beneath; less than normal

Front 39

idio-

Back 39

individual

Front 40

im-

Back 40

not

Front 41

in-

Back 41

in; inside; within; not

Front 42

infra-

Back 42

beneath; below; under

Front 43

inter-

Back 43

between

Front 44

intra-

Back 44

within

Front 45

juxta-

Back 45

near; beside

Front 46

mal-

Back 46

bad; poor

Front 47

mega-

Back 47

large

Front 48

meso-

Back 48

middle

Front 49

meta-

Back 49

beyond; after; change

Front 50

milli-

Back 50

one-thousandth

Front 51

mono-

Back 51

one; single

Front 52

multi-

Back 52

many

Front 53

non-

Back 53

not

Front 54

nulli-

Back 54

none

Front 55

oxy-

Back 55

rapid; sharp

Front 56

pachy-

Back 56

thick

Front 57

pan-

Back 57

all

Front 58

par-

Back 58

apart from

Front 59

para-

Back 59

near; beside; beyond; two like parts

Front 60

per-

Back 60

through; intense

Front 61

peri-

Back 61

around; about

Front 62

poly-

Back 62

many; much

Front 63

post-

Back 63

after; behind

Front 64

pre-

Back 64

before; in front

Front 65

primi-

Back 65

first

Front 66

pseudo-

Back 66

false

Front 67

quadri-

Back 67

four

Front 68

retro-

Back 68

backward; behind

Front 69

rube-

Back 69

red

Front 70

semi-

Back 70

half

Front 71

sub-

Back 71

beneath; under

Front 72

supra-

Back 72

above; over; beyond

Front 73

sym-

Back 73

joined; together

Front 74

syn-

Back 74

joined; together

Front 75

tachy-

Back 75

rapid

Front 76

trans-

Back 76

across; through

Front 77

tri-

Back 77

three

Front 78

ultra-

Back 78

beyond; excess

Front 79

uni-

Back 79

one