A minute fragment or quantity of matter; the smallest perceptible or discernible part of an aggregation or mass; (formerly often) an atom or molecule.
| 单词 | θ79327 |
| 释义 | the world > matter > physics > atomic physics > [noun] > minute quantity of matter (6) particlea1398 A minute fragment or quantity of matter; the smallest perceptible or discernible part of an aggregation or mass; (formerly often) an atom or molecule. atom1555 Originally (without explicit reference to Greek philosophy): each of the particles of which matter is ultimately composed, aggregates of which… minimum1663 The smallest portion into which matter is divisible; an atom. Also: the hypothetical smallest possible unit of time or space. Cf. minim, n.1 3. Obs… molecule1701 Science. Originally: one of the minute discrete particles of which material substances were thought to be composed. Now: spec. the smallest unit of… Subcategories:— kind of (1) — adsorbed atom (1) |
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