molecule
//ˈmɒl.ɪ.kjuːl//
Noun
moleculeSingular
moleculesPlural
1
The smallest unit of a chemical compound that retains its chemical properties, consisting of two or more atoms bonded together.
A water molecule consists of two hydrogen atoms and one oxygen atom.
2
A very small particle or amount of something.
There isn't a molecule of truth in what he said.