Lewis Short
(adjective) : sescuplus (sesquiplus, in vett. edd. Plin. 2, 22, 20, ยง 84, where, however, the best MSS. have sescuplus), a, um, sesqui
* Taken once and a half, once and a half as much: ut tempora tria ad duo relata sescuplum faciant,Quint. 9, 4, 47; so Plin. 1. 1.: tempus, Ter. Maur. Syll. pp. 2395 and 2412 P.: ratio,Censor. de Die Nat. 1.
Charlton T. Lewis, Charles Short, A Latin Dictionary