molecule

Plural

molecules

1. 1.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.

   • Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom and a chlorine atom.
   • Clinical trials testing the molecule in humans have been underway for three years, Sinclair said.

2. 2.A tiny amount.

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Synonyms

• particle