One of a pair of quotation marks used to denote a quotation in writing. The symbol used at the beginning of the quotation ("opening quotation mark") is usually “ ("open inverted commas") or ‘ ("open inverted comma"), and the symbol at the end ("closing quotation mark") is ” ("close inverted commas") or ’ ("close inverted comma").

Either of a pair of punctuation marks used primarily to mark the beginning and end of a passage attributed to another and repeated word for word, but also to indicate meanings or glosses and to indicate the unusual or dubious status of a word. They appear in the form of double quotation marks (“ ”) and single quotation marks (‘ ’). Single quotation marks are usually reserved for setting off a quotation within another quotation.