| 释义 |
Definition of semimetal in English: semimetalnounˈsɛmɪmɛt(ə)l Chemistry An element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid non-metals or semiconductors. Also called metalloid Example sentencesExamples - It is a metalloid or semimetal, which is defined as ‘an element that has the physical appearance and properties of a metal but behaves chemically like a nonmetal.’
- Separating them are metalloids or semimetals.
- There is no sharp dividing line between the metals and nonmetals; the metalloids, also called semimetals, form a buffer between the two.
- Typical examples would include metal oxides, metal and semimetal nitrides.
Derivatives adjective Chemistry The latter are good quality - hard, dense, semimetallic, and capable of taking a high polish. Example sentencesExamples - Semimetallic friction material was introduced in the late 1960s and has gained widespread usage in the mid-1970s.
- Semimetallic gaskets are designed for medium and high-pressure applications, and offer a high degree of safety.
Origin Mid 17th century: from modern Latin semimetallum (see semi-, metal). |