\An"ti*mo*ny\ (?; 112), n. [LL. antimonium, of unknown
origin.] (Chem.)
An elementary substance, resembling a metal in its appearance
and physical properties, but in its chemical relations
belonging to the class of nonmetallic substances. Atomic
weight, 120. Symbol, Sb.
Note: It is of tin-white color, brittle, laminated or
      crystalline, fusible, and vaporizable at a rather low
      temperature. It is used in some metallic alloys, as
      type metal and bell metal, and also for medical
      preparations, which are in general emetics or
      cathartics. By ancient writers, and some moderns, the
      term is applied to native gray ore of antimony, or
      stibnite (the stibium of the Romans, and the sti`mmi of
      the Greeks, a sulphide of antimony, from which most of
      the antimony of commerce is obtained. Cervantite,
      senarmontite, and valentinite are native oxides of
      antimony.