Respiratory Medical Prefixes and Their Meanings

Front

a-

Back

without

Front

an-

Back

without

Front

dia-

Back

through, completely

Front

de-

Back

without, down from

Front

endo-

Back

within

Front

epi-

Back

on, upon, covering

Front

eu-

Back

normal, easy, good

Front

infra-

Back

below

Front

-capnia

Back

Carbon dioxide

Front

-ectasis

Back

Dilation