simple past tense and past participle of comma

(rare) Followed, preceded, or surrounded by a comma or commas.

(rare, transitive) To place a comma or commas within text; to follow, precede, or surround a portion of text with commas.

(typography) The punctuation mark ⟨,⟩ used to indicate a set of parts of a sentence or between elements of a list. / (Romanian typography) A similar-looking subscript diacritical mark.

plural of comma

Third-person singular simple present indicative form of comma

present participle of comma

(rare) The usage of commas.

(grammar) Two independent clauses combined into a run-on sentence with only a comma between them.

(UK) A type of paired quotation mark: ‘ or “ (beginning the quoted material) and ’ or ” (ending it).