Jan 5, 2026 · Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties …

The word is derived from French molécule (1678), from Neo-Latin molecula, diminutive of Latin moles "mass, barrier". The word, which until the late 18th century was used only in Latin form, …

MOLECULE definition: the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound. See examples …

Sep 3, 2024 · The terms molecule, compound, and atom can be confusing! Here's an explanation of what a molecule is with some examples of common molecules.

MOLECULE definition: 1. the simplest unit of a chemical substance, usually a group of two or more atoms 2. the simplest…. Learn more.

Dec 26, 2025 · molecula (plural moleculae) (now historical) A molecule; a small particle of something. [from 18th c.] quotations

Neo-Latin, equivalent. to Latin mōlē (s) mass + -cula - cule1 earlier molecula 1785–95