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σ電子 (シグマでんし) Japanese meaning | Kotomora

σ電子しぐまでんし

Meanings

1

noun

sigma electron

Technical term in chemistry and physics for an electron in a sigma bond or sigma orbital.

σ電でん子しは分ぶん子しの結けつ合ごう軸じくに沿そって分ぶん布ぷしている。
Sigma electrons are distributed along the bond axis of the molecule.

Kanji

電electricity
子child, sign of the rat, 11PM-1AM

Similar words

π電子ぱいでんし
π電子 (pi electron) refers to electrons in pi bonds, which are perpendicular to the bond axis, in contrast to sigma electrons.

Etymology

Compound of the Greek letter σ (sigma) and 電子 (electron). The term is a direct borrowing of the English 'sigma electron' into Japanese scientific vocabulary.