One of the halogen elements, related in its chemical qualities to chlorine and iodine. Atomic weight 79.8. Symbol Br. It is a deep reddish brown liquid of a very disagreeable odor, emitting a brownish vapor at the ordinary temperature. In combination it is found in minute quantities in sea water, and in many saline springs. It occurs also in the mineral bromyrite. [1913 Webster]
bromine, n. Chem. a dark fuming liquid element with a choking irritating smell, extracted from bittern and used in the manufacture of chemicals for photography and medicine.