adjective. Made up of two atoms.

In chem., consisting of two atoms: as, a diatomic radical: specifically applied to hydrates which have two hydrogen atoms united to the nucleus radical by oxygen. It is these hydrogen atoms alone which are easily replaced by metallic bases or other radicals.

adjective. Containing two atoms.

adjective. Having two replaceable atoms or radicals.

adjective. Consisting of two atoms.

noun. A diatomic molecule or other species

adjective. of or relating to a molecule made up of two atoms

"Even the structure of a diatomic molecule like O2 is not an existant thing … in other words, the structure (shape) of it does not exist in addition to the two oxygen atoms."

monatomic  tetratomic  triatomic  

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