Bible Dictionaries
Polychromate

Webster's Dictionary

(1):

(n.) A compound which exhibits, or from which may be prepared, a variety of colors, as certain solutions derived from vegetables, which display colors by fluorescence.

(2):

(n.) A salt of a polychromic acid.

Bibliography Information
Webster, Noah. Entry for 'Polychromate'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​p/polychromate.html. 1828.