Medical Terminology Prefixes

A-

No, not, without, lack of, apart

Ab-

Away from

Ad-

Towards, near

Anti

Opposing

Auto-

Self

Bi-

Double

Brady-

Slow

Brachy

Short

Circum-

Around

Con-

Together, with

Contra-

Against

Di-

Twice, two

Dia-

Through, between, complete

Dis-

Apart

Dys-

Painful, bad, difficult

Ec- , Exo-, Ecto-

Out, outside, outer

Endo-

Within

Epi-

Above, over, upon

Extra-

Beyond, outside

Hemi-

Half

Hyper-

Above, beyond, excessive

Hypo-

Below, under, deficient

Infer-

Beneath

Inter-

Between

Intra-

Within

Macro-

Large

Mal-

Bad

Meso-

Middle

Meta-

Change, beyond, over, between

Micro-

Small

Mono-

One

Multi-

Many

Neo-

New

Odyno-

Painful

Oligo-

Scanty, little

Pan-

All

Para-

Beside, alongside, abnormal

Peri-

Around

Poly

Many, much, excessive

Post-

After, behind

Pre-

Before, in front of

Presby-

Old age

Pro-

Before, foward

Pseudo-

Falso

Quadri-

Four

Re-

Back, backward

Retro

Backward, behind

Sub-

Under, beneath

Supra-

Above, beyond, superior

Tachy-

Rapid, fast

Trans-

Across, through

Tri-

Three

Uni-

One