bitter principle

bitter principle

noun Chemistry.
any of several hundred natural compounds, usually of vegetable origin, having a bitter taste, and not admitting of any chemical classification.

Origin:
1930–35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Bitter principle is always a great word to know.
So is ethereal. Does it mean:
pertaining to, containing, or resembling ethyl ether
of, pertaining to, or tending to develop into icelike crystals: glacial phosphoric acid
Collins
World English Dictionary
bitter principle
 
n
any of various bitter-tasting substances, such as aloin, usually extracted from plants

Collins English Dictionary - Complete & Unabridged 10th Edition
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