molecule

noun
UK: /ˈmɒlɪkjuːl/
US: /ˈmɑːlɪkjuːl/

  1. The smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms.

    1. A water molecule is made of hydrogen and oxygen.
    2. Scientists study how a molecule reacts with other substances under pressure.

  2. A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

    1. Salt is a molecule.
    2. The new research focused on the complex structure of the protein molecule.

Synonyms

particle unit corpuscle

Frequently Asked Questions

The word "molecule" in English means: The smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms., A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction..

The phonetic transcription of "molecule" is /ˈmɒlɪkjuːl/ in British English and /ˈmɑːlɪkjuːl/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "molecule": particle, unit, corpuscle.

Example usage of "molecule": "A water molecule is made of hydrogen and oxygen.". More examples on the page.