molecule

/ˈmɒləkjuːl/

IPA: /M AA1 L AH0 K Y UW0 L/

noun
  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.

  2. 2

    A tiny amount.

Source: https://en.wiktionary.org/wiki/molecule