amidol

noun

am·​i·​dol

ˈaməˌdȯl,

-ōl

plural -s

: a colorless crystalline salt C₆H₃(NH₂)₂OH·2HCl used chiefly as a photographic developer; the dihydrochloride of 2,4-diamino-phenol

Word History

Etymology

German, from Amidol, a trademark

First Known Use

1882, in the meaning defined above

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