noun.
A gray, green to yellow, or brown vitreous mineral, BeAl2O4, relatively rare and used as a gemstone.
The Century Dictionary and Cyclopedia
noun.
A mineral of a yellowish-green to emerald-green color, sometimes red by transmitted light, an aluminate of glucinum.
the GNU version of the Collaborative International Dictionary of English
noun.
A mineral, found in crystals, of a yellow to green or brown color, and consisting of aluminia and glucina. It is very hard, and is often used as a gem.
noun.
A vitreousmineral, often pale green, a mixed oxide of aluminium and beryllium with the chemical formulaBeAl2O4, used as a gemstone.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone
Word Usage
"When chrysoberyl is of fibrous or tubular internal structure it affords cat's-eyes (when cabochon cut), and these should be specifically named as "_chrysoberyl cat's-eye_" to distinguish them from the less beautiful and less valuable quartz cat's-eyes."