- præ-
- præ-
in med.L. also pre-, a L. prep. and adv., meaning ‘before’; a very frequent prefix and combining element. In Eng. the L. spelling was formerly not uncommon, but is now usual only in words that are still regarded as Latin, as præcipe, præcognitum, præcordia, præmunire, or that are terms of classical antiquity, as prætor. In other words pre- is now the usual form.
Useful english dictionary. 2012.