Noun
An element possessing metallic properties in an inferior degree and not malleable, as arsenic, antimony, bismuth, molybdenum, uranium, etc.
Source: Webster's dictionaryChesterman and Lowe, p. 357 Sulfides are classified by the ratio of the metal or semimetal to the sulfur, such as M:S equal to 2:1, or 1:1. Source: Internet
Unlike graphene, which is a two-dimensional semimetal, carbon nanotubes are either metallic or semiconducting along the tubular axis. Source: Internet
When the difference in electronegativity is decreased, the bonding may then lead to a semiconductor, a semimetal or eventually a metallic conductor with metallic bonding. Source: Internet