QUADRUPLE

I. verb (~d; quadrupling) Etymology: Middle English (Scots), from Latin quadruplare, from quadruplus Date: 14th century transitive verb to make four times as great or as many, intransitive verb to become four times as great or as numerous, II. noun see: -fold Date: 15th century a sum four times as great as another, III. adjective Date: 1557 having four units or members, being four times as great or as many, marked by four beats per measure , quadruply adverb quadruplicity noun