Definition

Referring to a molecule that is composed of two atoms, which can be the same or different elements.

Example

Oxygen exists as a diatomic molecule, meaning each molecule is made up of two oxygen atoms.

Conversation

Did you know that oxygen is a diatomic molecule?

Really? I didn't know that!

Yeah, it means it has two atoms in its structure.

That's interesting! I should remember that for my chemistry class.

Synonyms & Antonyms

Root Explanation

Diatomic → It is formed from "di-" (meaning two) and "atomic" (from Greek "atomos", meaning indivisible). The word "diatomic" refers to a molecule that consists of two atoms.

Memory Tip

Think of 'di-' meaning two, and 'atomic' referring to indivisible particles — so diatomic means made of two indivisible atoms.

Visually Confused Words