IPA: /ˈpoʊstˌdeɪt/
KK: /ˈpoʊstˌdeɪt/
To assign a date to something that is later than the actual date it was created or issued.
She decided to postdate the check to ensure it would not be cashed until next month.
Past: postdated
Past Participle: postdated
Postdate → It is formed from "post-" (meaning after) and "date" (from Latin "data", meaning something given or a specific time). The word "postdate" means to assign a date that is after the actual date of an event or document.
Think of 'after' ('post-') when you assign a date ('date') that comes later than the actual date.