Prefixes

A-, an-

Lack of, without, not

Ab-

Away from, take away

Ad-

Towards or to, near

Ambi-, ambo-

Both

Amphi-

Double, both sides

Ana-

Up, apart

Ante-

Before, in front of, or forward

Anti-

Opposing or against

Ap-, apo-

Separated or derived from

Aut-, auto-

Self, by yourself

Bi-

Double, two, twice, both

Brady-

Slow; most often refers to heart rhythm or rate

Brachy-

Short

Cata-

Lower, down, against

Circum-

Around

Co-, con-, com-

Together or with

Contra-

Against or opposed to

De-

Down or from

Di-

Twice or two

Dia-

Through, apart, across, between

Dis-

Apart from or free from

Dys-

Bad, painful, difficult

E-, ec-, ex-

From, away from, out of

Ect-, exo-, ecto-

Outside, outer, on

Em-, en-

In

Endr-, endo-, ent-, ento-

Within or inner

Epi-, ep-

Upon, over, or on

Eu-

Normal

Extra-, extro-

Beyond, outside of, or outward

Hemi-, semi-

Half, half of

Hyper-

Above, excessive, beyond

Hyp-, hypo-

Below, beneath, deficient

Im-, in-

Into, in, within

Infra-

Below or beneath

Inter-

Between

Intra-

Within, inside

Intro-

Into or within

Iso-

Same or equal

macro-

large

mal-

bad

mes- , meso-

middle

meta-

beyond or changing

micro- , micr-

tiny, small

mono- , uni-

one

mult- , multi-

many, multiple

neo-

new or recent

oligo-

scanty

ortho-

straight, normal

pan-

all

para-

beyond, beside, or after

per-

through

peri-

around

poly-

many, excessive

post-

after or following, behind

pre-, pro-

in front of, before, preceding

presby-

old age

pseudo-

false

quadri-

four

re-

backward or again

retro-

behind, backward

semi-

half

sub-

under or beneath

super-, supra-

above, excessive, superior

sym-, syn-

with or together

tachy-

rapid or fast

trans-

through or across

tri-

three

ultra-

excessive, beyond