Webster's 1828 Dictionary
METALLOID
n.A name sometimes applied to the metallic bases of the alkalies and earths.
METALLOIDAL
a.Having the form or appearance of a metal.
Webster's 1913 Dictionary
METALLOID
Met "al *loid, n. Etym: [L. metallum metal + -oid: cf. F. métalloïde.](a ) Formerly, the metallic base of a fixed alkali, or alkaline earth; -- applied by Sir H. Davy to sodium, potassium, and some other metallic substances whose metallic character was supposed to be not well defined. (b ) Now, one of several elementary substances which in the free state are unlike metals, and whose compounds possess or produce acid, rather than basic, properties; a nonmetal; as, boron, carbon, phosphorus, nitrogen, oxygen, sulphur, chlorine, bromine, etc. , are metalloids.
METALLOID
METALLOID Met "al *loid, a.
1. Having the appearance of a metal.
2. (Chem. )
Defn: Having the properties of a nonmetal; nonmetallic; acid; negative.
METALLOIDAL
METALLOIDAL Met `al *loid "al, a.
Defn: Metalloid.
New American Oxford Dictionary
metalloid
met al loid |ˈmetlˌoid ˈmɛdlˌɔɪd | ▶noun Chemistry an element (e.g., germanium or silicon ) whose properties are intermediate between those of metals and solid nonmetals. They are electrical semiconductors.
Oxford Dictionary
metalloid
metal |loid |ˈmɛt (ə )lɔɪd | ▶noun another term for semimetal.
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