| v. t. | 1. | To make fourfold; to double twice; to quadruple. |
| a. | 1. | |
| 1. | Fourfold; doubled twice; four times repeated; | |
| 2. | (Math.) Raised to the fourth power. |
| Noun | 1. | quadruplicate - any four copies; any of four things that correspond to one another exactly; "it was signed in quadruplicate" |
| Verb | 1. | quadruplicate - reproduce fourfold; "quadruplicate the bill" |
| Adj. | 1. | quadruplicate - having four units or components; "quadruple rhythm has four beats per measure"; "quadruplex wire" |