pyr-

combining form

variants or pyro-

1

: fire : heat

pyrometer

pyrheliometer

2

a

: produced by or as if by the action of heat

pyroelectricity

b

: derived from a corresponding ortho acid by loss usually of one molecule of water from two molecules of acid

pyrophosphoric acid

3

: fever

pyrogenic

Word History

Etymology

Greek, from pyr — more at fire