Definify.com
Webster 1913 Edition
Pyro
Py′ro
,Noun.
 (Photog.) 
Abbreviation of pyrogallic acid. 
[Colloq.] 
Definition 2025
pyro
pyro
See also: pyro-
English
Noun
pyro (plural pyros)
- (slang) a pyromaniac
 - pyrocellulose
 - pyrotechnician
 - pyrotechnics
 - (archaic, chiefly photography) pyrogallic acid
 
Translations
Adjective
pyro (comparative more pyro, superlative most pyro)