Medical Terminology Prefixes

Front 1

A-, an-

Back 1

Lack of, without, not

Front 2

Ante-

Back 2

before, in front of, or forward

Front 3

Anti-

Back 3

opposing or against

Front 4

Bi-

Back 4

double, two, twice, both

Front 5

Co-, con-, com-

Back 5

togther or with

Front 6

De-

Back 6

down, or from

Front 7

Di-

Back 7

twice or two

Front 8

Extra-, extro-

Back 8

beyond, outside of, or outward

Front 9

Hemi-, Semi-

Back 9

half, half of

Front 10

Hyper-

Back 10

above, excessive, beyond

Front 11

Hyp-, hypo-

Back 11

below, beneath, deficient

Front 12

Intro-

Back 12

into, or within

Front 13

Micro-, micr-

Back 13

tiny or small

Front 14

Post-

Back 14

after, or following behind

Front 15

Pre-, pro-

Back 15

in front of, before, preceding

Front 16

Retro-

Back 16

behind, backward

Front 17

Semi-

Back 17

half

Front 18

Trans-

Back 18

through or across

Front 19

Tri-

Back 19

three

Front 20

Ultra-

Back 20

excessive, beyond

Front 21

Ab-

Back 21

away from, take away

Front 22

Ad-

Back 22

towards or near to

Front 23

Ambi-, ambo-

Back 23

both

Front 24

Amphi-

Back 24

double, both sides

Front 25

Ana-

Back 25

up, apart

Front 26

Ap-, apo-

Back 26

separated or derived from

Front 27

Aut-, Auto-

Back 27

self, by yourself

Front 28

Brady-

Back 28

slow(refers to heart rhythm/rate)

Front 29

Brachy-

Back 29

short

Front 30

Cata-

Back 30

lower, down, against

Front 31

Circum-

Back 31

around

Front 32

Contra-

Back 32

against or opposed to

Front 33

Dia-

Back 33

through, apart, across, between

Front 34

Dis-

Back 34

apart from or free from

Front 35

Dys-

Back 35

bad, painful, difficult

Front 36

E-, ec-, ex-

Back 36

from, away from, out of

Front 37

Ect-, exo-, ecto-,

Back 37

outside, outer, on

Front 38

Em-, en-

Back 38

In

Front 39

End-, endo-, ent-, ento-

Back 39

within or inner

Front 40

Epi-, ep-

Back 40

upon, over, or on

Front 41

Eu-

Back 41

normal

Front 42

Im-, in-

Back 42

into, in, within

Front 43

Infra-

Back 43

below, or beneath

Front 44

Inter-

Back 44

between

Front 45

Intra-

Back 45

within, inside

Front 46

Intro-

Back 46

into or within

Front 47

Mal-

Back 47

bad

Front 48

Mes-, meso-

Back 48

middle

Front 49

Meta-

Back 49

beyond or changing

Front 50

Mono-, uni-

Back 50

one

Front 51

Mult-, multi-

Back 51

many or multiple

Front 52

Neo-

Back 52

new or recent

Front 53

Oligo-

Back 53

scanty

Front 54

Pan-

Back 54

all

Front 55

Para-

Back 55

beyond, beside, or after

Front 56

Per-

Back 56

through

Front 57

Peri-

Back 57

around

Front 58

Poly-

Back 58

many, excessive

Front 59

Pre-, pro-

Back 59

in front of, before, preceding

Front 60

Presby-

Back 60

old age

Front 61

Pseudo-

Back 61

false

Front 62

Quadri-

Back 62

four

Front 63

Re-

Back 63

backward or again

Front 64

Sub-

Back 64

under or beneath

Front 65

Super-, supra-

Back 65

above, excessive, superior

Front 66

Sym-, syn-

Back 66

with or together

Front 67

Trachy-

Back 67

rapid or fast