Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

proto-

Definition of proto-

  1. see prot-




Seen and Heard

What made you want to look up proto-? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

deserving imitation because of excellence

Get Word of the Day daily email!