Also found in: Thesaurus, Medical, Financial, Acronyms, Encyclopedia, Wikipedia.
Related to gallium: Gallium scan
n. Symbol Ga
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.
[From 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.]
(Elements & Compounds) a silvery metallic element that is liquid for a wide temperature range. It occurs in trace amounts in some ores and is used in high-temperature thermometers and low-melting alloys. Gallium arsenide is a semiconductor. Symbol: Ga; atomic no: 31; atomic wt: 69.723; valency: 2 or 3; relative density: 5.904; melting pt: 29.77°C; boiling pt: 2205°C
[C19: from New Latin, from Latin gallus cock, translation of French coq in the name of its discoverer, Lecoq de Boisbaudran, 19th-century French chemist]
gal•li•um(ˈgæl i əm)
a rare steel-gray metallic element used in high-temperature thermometers because of its high boiling point (1983°C) and low melting point (30°C). Symbol: Ga; at. wt.: 69.72; at. no.: 31; sp. gr.: 5.91 at 20°C.
[1870–75; < New Latin, derivative of Latin gall(us) cock (translation of French coq, from Lecoq de Boisbaudran, 19th-century French chemist) + New Latin -ium -ium2]
Symbol Ga A rare, silvery metallic element that is found as a trace element in coal, bauxite, and other minerals. It is liquid near room temperature and is used in thermometers and semiconductors. Atomic number 31. See Periodic Table.
Switch to new thesaurus
|Noun||1.||gallium - a rare silvery (usually trivalent) metallic element; brittle at low temperatures but liquid above room temperature; occurs in trace amounts in bauxite and zinc ores|
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
bauxite - a clay-like mineral; the chief ore of aluminum; composed of aluminum oxides and aluminum hydroxides; used as an abrasive and catalyst