molecule

Definition

The smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds.

Etymology

Borrowed from French molécule, from New Latin molecula (“a molecule”), diminutive of Latin moles (“a mass”).

Example Sentences

• "Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom and a chlorine atom."
• "The critical component of the photosynthetic system is the “water-oxidizing complex”, made up of manganese atoms and a calcium atom. This system splits water molecules and delivers some of their electrons to other molecules that help build up carbohydrates."
• "Clinical trials testing the molecule in humans have been underway for three years, Sinclair said."

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