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Webster's 1913 Dictionary

POLYCHROMIC

Pol `y *chro "mic, a. Etym: [Poly- + (sense 1 ) Gr. chromic. ]

 

1. Polychromatic.

 

2. (Chem. )

 

Defn: Pertaining to, or designating, any one of several acids (known only in their salts ) which contain more than one atom of chromium.