Webster's English Dictionary

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metalloid

1. met.al.loid \'met-*l-.o.id\ n [L metallum] 1: NONMETAL; esp : one that 
   can combine with a metal to form  an alloy 2: an element intermediate in 
   properties between the typical metals and non metals
2. metalloid also met.al.loi.dal \.met-*l-'o.id-*l\ aj 1: resembling a 
   metal  2: of, relating to, or being a metalloid