/ ˌkɑːpeɪ ˈdiːem; ˈdaɪem; NAmE ˌkɑːrpeɪ/ exclamation
(from Latin ) an expression used when you want to say that sb should not wait, but should take an opportunity as soon as it appears
••
WORD ORIGIN
Latin , seize the day! , a quotation from Horace ( Odes I.xi).