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One of the chlorine group (bromine, chlorine, fluorine, iodine) of metalloids, all univalent elements; they form monobasic acids with hydrogen, and their hydroxides (fluorine forms none) are also monobasic acids.

Bodies capable of forming salts with metals; chlorine, iodine, fluorine, bromine.

A substance which, by combination with a metal, forms a salt, as chlorine.

Any element capable of forming haloid salts; such as chlorin, iodin, bromin, and fluorin.

One of a group of non-metallic elements so called from the fact that their saline combinations with the alkaline metals resemble in appearance and chemical structure ordinary sea salt. They are fluorin, chlorin, bromin, and iodin. [Gr.]