• Webster's Revised Unabridged Dictionary
    • n Amidol (Photog. & Chem) A salt of a diamino phenol, C6H3(OH)(NH2)2, used as a developer.
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Century Dictionary and Cyclopedia
    • n amidol A trade-name for the hydrochlorid of diaminophenol, used as a developer in photography. Its formula is C6H3OH(NH2)2.2HCl. The free base is unstable.
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Webster's Revised Unabridged Dictionary
Amide, + -ol, as in alcohol,


In literature:

To each ounce of the above add, just before using, three grains of dry amidol.
"The Barnet Book of Photography" by Various