1. Of two atoms.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• diotonic,
• diatetic,
• dianamic,
• diamic,
• siatomic,
• xiatomic,
• ciatomic,
• fiatomic,
• riatomic,
• diatimic,
• diatommic,
• diatomik,
• disomia,
• datolit,
• lithtomic,
• lithmic,
• dyastomic,
• diatomatic,
• dizioic,
• dizouic

• diatonic,
• atomic.

The adjective form of the word "diatomic" is "diatomic".

The plural form of the word "diatomic" is "diatomics".

The singular form of the word "diatomic" is "diatom"