a solid consisting of a double twelve-sided pyramid

(chemistry) beryllium oxide

(chemistry) Any intermetallic compound of beryllium with another metal; present in some alloys.

Beryl-like; having a light blue-green colour.

(countable and uncountable) The berylline color. / (countable) berylline hummingbird

(medicine) A chronic disease of the lungs, caused by inhalation of beryllium compounds.

(mineralogy) A rare mineral, sodium beryllium phosphate, with the chemical formula NaBePO₄; found especially in Maine.

(inorganic chemistry) A white, crystalline compound, BeO, used in semiconductors and in specialist ceramic applications.

plural of berylloid

plural of beryllide