atom
Translation
atom
Examples
A water molecule has two hydrogen atoms.
A water molecule has two hydrogen atoms.
He didn't have an atom of sense.
He didn't have an atom of sense.
Grammar Patterns
an atom of (sth.) a basic unit of a chemical element A molecule of water consists of two atoms of hydrogen.
Similar Words
Synonyms: particle, element; Antonyms: whole, compound
Etymology
From Greek 'atomos', meaning 'uncut, indivisible', from 'a-' (not) + 'tomos' (a cutting).
Memory Tips
Remember its origin 'a-tom' (not-cut). It was once thought to be the smallest thing that could not be divided further.