単たん原げん子し分ぶん子し

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Meanings

1

noun

monoatomic molecule

Technical term in chemistry for a molecule consisting of a single atom, such as noble gases.

simple, one, single

原meadow, original, primitive

子child, sign of the rat, 11PM-1AM

分part, minute of time, segment

Compound of 単 (single) + 原子 (atom) + 分子 (molecule). The term is a direct calque of the English 'monoatomic molecule'.