Diatomic (adjective)

Consisting of two atoms, typically of the same element, bonded together.

Origin:

From the greek words 'dia' meaning 'two' and 'tomos' meaning 'a cutting'.

Examples:

1. The diatomic molecule of hydrogen gas is the simplest and most abundant molecule in the universe.
2. Diatomic molecules of oxygen, nitrogen, and other gases make up the Earth's atmosphere.
3. The diatomic molecule is held together by a covalent bond.
4. The diatomic molecule of iodine, I2, is used as a disinfectant.
5. Diatomic molecules play a key role in the chemistry of life, forming the basis of complex organic molecules.