- a brand name for a colorless, water-soluble salt, C14H20N2O6S, used chiefly as a photographic developer.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for metol
The same remarks as to over and under-exposure apply as in the case of metol.
- a colourless soluble organic substance used, in the form of its sulphate, as a photographic developer; p- methylaminophenolSee also aminophenol
C20: from German, an arbitrary coinage