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metalloid

[met-l-oid] /ˈmɛt lˌɔɪd/
noun
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.
adjective
3.
of or relating to a metalloid.
4.
resembling both a metal and a nonmetal.
Origin of metalloid
1825-1835
1825-35; metall- + -oid
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for metalloid
  • Antimony is sometimes referred to as a metalloid, indicating that it displays both metallic and nonmetallic characteristics.
British Dictionary definitions for metalloid

metalloid

/ˈmɛtəˌlɔɪd/
noun
1.
a nonmetallic element, such as arsenic or silicon, that has some of the properties of a metal
adjective
2.
of or being a metalloid
3.
resembling a metal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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metalloid in Science
metalloid
  (mět'l-oid')   
  1. An element that is not a metal but that has some properties of metals. Arsenic, for example, is a metalloid that has the visual appearance of a metal, but is a poor conductor of electricity; metalloids are generally semiconductors. The elements classified as metalloids are boron, silicon, germanium, arsenic, antimony, tellurium, and polonium. Metalloids can be viewed as a diagonal section on the Period Table, separating metals from nonmetals.

  2. A nonmetallic element, such as carbon, that can form alloys with metals.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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