Prefixes end with a dash (prefix-).
Prefixes
Prefixes, Combining Forms, and Suffixes
Appendix
A
- a-
- no, not, without, away from, negative
- ab-
- away from, negative, absent
- abs-
- away from
- ad-
- toward, to, in the direction of
- af-
- toward, to
- all/o, all-
- other, different from normal, reversal
- ambi-
- both sides, around or about, double
- an-
- not, without
- ana-
- up, apart, excessive
- ante-
- before, in front of, forward
- anti-
- against
- ap-
- toward, to
- ap-, apo-
- separation, away from, opposed, detached
- as-
- toward, to
- at-
- toward, to
B
- bi-
- twice, double, two
- bin-
- two
- brachy-
- short
- brady-
- slow
C
- calci-, calc/o
- calcium
- cine-
- movement
- co-
- together, with
- com-
- together, with
- contra-
- hold together
D
- de-
- down, lack of, from, not, removal
- deci-
- ten, tenth
- demi-
- half
- -derma, dermat/o, derm/o
- skin
- di-
- twice, twofold, double
- dia-, di-
- through, between, apart, complete
- dips/o, -dipsia
- thirst
- dis-
- negative, apart, absence of
- dys-
- bad, difficult, painful
E
- e-
- out of, from
- ec-
- out, outside
- ecto-
- out, outside
- ef-
- out
- em-
- in
- en-
- in, within, into
- end-, endo-
- in, within, inside
- ento-
- within
- epi-
- above, upon, on
- es-
- out of, outside, away from
- eso-
- inward
- eu-
- good, normal, well, easy
- ex-
- out of, outside, away from
- exo-
- out of, outside, away from
- extra-
- on the outside, beyond, outside
F
- fore-
- before, in front of
G
- gen-, gen/o, -gen
- producing, forming
H
- hemi-
- half
- hyper-
- excessive, increased
- hypo-
- deficient, decreased
I
- im-
- not
- in-
- in, into, not, without
- infra-
- below, beneath, inferior to
- inter-
- between, among
- intra-
- within, inside
- intro-
- within, into, inside
- iso-
- equal, same
J
- juxta-
- beside, near, nearby
M
- macro-
- large, abnormal size or length, long
- mal-
- bad, abnormal
- mega-, megal/o
- large, great
- meso-
- middle
- meta-
- change, beyond, subsequent to, behind, after
- micr/o, micro-
- small
- mid-
- middle
- milli-
- one-thousandth
- mio-
- smaller, less
- mono-
- one, single
- multi-
- many, much
N
- neo-, ne/o
- new, strange
- nitro-
- nitrogen
- non-
- no, not
- nor-
- chemical compound
- nulli-
- none
O
- ob-
- against
- os-
- mouth, bone
P
- pan-
- all, entire, every
- par-, para-
- beside, near, beyond, abnormal, apart from, opposite, along side of
- per-
- completely, through
- peri-
- surrounding, around
- poly-
- many
- post-
- after, behind
- pre-
- before, in front of
- primi-
- first
- pro-
- before, on behalf of, supporting
- pros-
- before, forward
R
- re-
- back, again
- retro-
- behind, backward, back of
S
- semi-
- half
- sub-
- under, less, below
- super-
- above, excessive, higher than
- supra-
- above, upper, excessive
- sym-
- with, together, joined together
- syn-
- together, with, union, association
T
- tachy-
- fast, rapid
- tetra-
- four
- trans-
- across, through
- tri-
- three
U
- ultra-
- beyond, excess
- un-
- not
- uni-
- one