py路ro路gal路lol
| \ 藢p墨-r艒-藞ga-藢l券l
, -藢l艒l; -藞g券-
\
: a poisonous bitter crystalline phenol C6H6O3 with weak acid properties that is usually obtained by pyrolysis of gallic acid and used especially as a mild reducing agent (as in photographic developing)