- To designate a date earlier than the actual one; to move a date, appointment, event, or period of time to an earlier point (contrast "postdate".)
- (transitive) To exist, or to occur before something else; to antedate (the more correct term for this usage.)
- The Japanese use of Pascal's Triangle predates its discovery by Blaise Pascal.
The transitive sense of moving an event to an earlier point is the proper one for "predate." "Antedate" is the correct term for occurring before something else. These terms are frequently misused even in educated writing.
- (to designate a date earlier): antedate
- (to designate a date earlier): postdate
predate (plural predates)
- A publication, such as a newspaper or magazine, that is issued with a printed date later than the date of issue.
- To prey upon something.
- (to prey upon): prey