グラム原げん子し

グ

ラ

ム

げ

ん

し

Meanings

1

noun

gram atom

Chemistry term: the quantity of an element whose mass in grams is numerically equal to its atomic weight. Now largely replaced by the mole concept, but still encountered in older texts.

グラム原げん子しは、かつて化か学がくの授じゅ業ぎょうで教おしえられた概がい念ねんだ。
The gram atom is a concept that was once taught in chemistry classes.

meadow, original, primitive

子child, sign of the rat, 11PM-1AM

Similar words

モル
モル (mole) is the modern SI unit for amount of substance, which has largely replaced the gram atom. グラム原子 refers specifically to the mass of one mole of atoms of an element.
グラム分ぶん子し
グラム分子 (gram molecule) is the analogous term for molecules, also largely replaced by the mole.

Etymology

Compound of グラム (gram) and 原子 (atom), a direct calque of the English term 'gram atom'.