a bluish-white, metallic chemical element, often a supercooled liquid at room temperature, used in semiconductors, LED's, lasers, etc., and as a substitute for mercury in high-temperature thermometers: symbol, Ga; at. no. 31
Origin of galliumModL: so named (1875) by P. E. Lecoq de Boisbaudran (1838-1912), French chemist, after Classical Latin Gallia, France, and as a pun on his name Lecoq (in L, gallus, a cock) + -ium
A rare metallic element that is liquid near room temperature, expands on solidifying, and is found as a trace element in coal, bauxite, and other minerals. It is used in semiconductor technology, as a component of various low-melting alloys, and in producing blue light-emitting diodes. Atomic number 31; atomic weight 69.72; melting point 29.78°C; boiling point 2,403°C; specific gravity 5.907; valence 2, 3. See Periodic Table.
Origin of galliumFrom Latin gallus, cock, punning translation of surname of Paul Émile Lecoq, de Boisbaudran (1838–1912), French chemist and element's discoverer : French le, the + French coq, rooster.
- A chemical element (symbol Ga) with an atomic number of 31; a soft bluish metal.