In 1511, leaders in Mecca believed coffee stimulated radical thinking and outlawed the drink. In 1524, the leaders overturned that order, and people could drink coffee again.
PROPENYLS
Noun
propenyls
plural of propenyl
Source: Wiktionary
PROPENYL
Pro"pe*nyl, n. Etym: [Propene + -yl.] (Chem.)
Definition: A hypothetical hydrocarbon radical, C3H5, isomeric with allyl and glyceryl, and regarded as the essential residue of glycerin. Cf. Allyl, and Glyceryl.
Source: Webster’s Unabridged Dictionary 1913 Edition
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27 June 2025
SQUARE
(adjective) having four equal sides and four right angles or forming a right angle; “a square peg in a round hole”; “a square corner”
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