thirty-first

== English == === Adjective === thirty-first The ordinal form of the number thirty-one, describing a person or thing in position number 31 of a sequence. ==== Usage notes ==== English ordinal numbers may function as either an adjective or as a noun, and almost never appear in the plural. ==== Abbreviations ==== 31st, 31st ==== Translations ==== === Noun === thirty-first (plural thirty-firsts) One of thirty-one equal parts of a whole. ==== Synonyms ==== thirty-oneth ==== Translations ====