Meaning of metalloid

met•al•loid

Pronunciation: (met'l-oid"), [key]
— n.
  1. a nonmetal that in combination with a metal forms an alloy.
  2. an element that has both metallic and nonmetallic properties, as arsenic, silicon, or boron.
—adj.
  1. of or pertaining to a metalloid.
  2. resembling both a metal and a nonmetal.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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