RUFOL
Ru"fol, n. Etym: [L. rufus reddish + -ol.] (Chem.)
Definition: A phenol derivative of anthracene obtained as a white crystalline substance, which on oxidation produces a red dyestuff related to anthraquinone.
Source: Webster’s Unabridged Dictionary 1913 Edition
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27 May 2025
DIRECTIONALITY
(noun) the property of being directional or maintaining a direction; “the directionality of written English is from left to right”
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