a chemical element, one of the halogens, usually in the form of a reddish-brown, corrosive liquid, that volatilizes to form a vapor that has an unpleasant odor and is very irritating to mucous membranes: used in making dyes, in photography, and, in the form of certain compounds, in antiknock motor fuel: symbol, Br; at. no. 35
Origin of bromineFrench brome ; from Classical Greek br?mos, stench + -ine
A dense, volatile, corrosive, reddish-brown, nonmetallic liquid halogen element that exists as a diatomic molecule, Br2 having a highly irritating vapor. Chiefly isolated from brines, it is used in producing fumigants, dyes, water purification compounds, and photographic chemicals. Atomic weight 79.904; atomic number 35; melting point −7.2°C; boiling point 58.8°C; density of gas 7.59 grams per liter; specific gravity (liquid, at 20°C) 3.12; valence 1, 3, 5, 7. See Periodic Table.
Origin of bromineFrench brome (from Greek br&omacron;mos, stench) + –ine2.
(countable and uncountable, plural bromines)