Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
hydrogen atom | Yes | No | No | No |
atom | Yes | No | No | No |
hydrogen atom (noun) | atom (noun) |
---|---|
an atom of hydrogen | (physics and chemistry) the smallest component of an element having the chemical properties of the element |
(nontechnical usage) a tiny piece of anything |