Word Study
metol
CIDE DICTIONARY
metol, n. [G.; trade name, fr. meta- + kresol cresol.].
A whitish soluble powder used as a developer in photography. Chemically, it is the sulphate of methyl-p -amino-m -cresol . [Webster 1913 Suppl.]
OXFORD DICTIONARY
metol, n. a white soluble powder used as a photographic developer.
Etymology
G, arbitrary name
For further exploring for "metol" in Webster Dictionary Online