1. Highly significant or important especially bringing about or marking the beginning of a new development or era
   "epochal decisions made by Roosevelt and Churchill"
   - epoch-making

See also: epoch, important, significant

• platyrhine
• platyrhinian
• platyrrhine
• Platyrrhini
• platyrrhinian
• platyrrhinic
• platysma
• Platystemon
• Platystemon californicus
• plaudit
• plaudits
• plaur
• plausibility
• plausible
• plausibleness
• plausibly
• plausive
• Plautus
• Plautus alle
• Plavix
• play
• play a joke on
• play a trick on
• play along
• play around