pro Meaning, Definition & Usage

  1. noun an athlete who plays for pay
    professional.
  2. noun an argument in favor of a proposal
  3. adjective in favor of (an action or proposal etc.)
    • a pro vote
  4. adverb in favor of a proposition, opinion, etc.

WordNet

Pro preposition
Etymology
L.; akin to prae before, Gr. , and E. for. See For, prep., and cf. Prior, a.
Definitions
  1. A Latin preposition signifying for, before, forth.
Pro adverb
Definitions
  1. For, on, or in behalf of, the affirmative side; -- in contrast with con.

Webster 1913