PRO definition: 1. an advantage to or a reason for doing something: 2. a person who plays a sport as a job rather…. Learn more.

The meaning of PRO is an argument or evidence in affirmation. How to use pro in a sentence.

PRO definition: in favor of a proposition, opinion, etc. See examples of pro used in a sentence.

1. a prefix, having anti- as its opposite, used to form adjectives that have the general sense “favoring” the group, interests, course of action, etc., denoted by the headword: pro-choice; pro-American; prowar.

A pro player is a professional sportsman or woman. You can also use pro to refer to sports that are played by professional sportsmen or women.

He is a pro when it comes to household repairs. She handled that tricky situation like an old pro. He is playing in the pros now.

A pro player is a professional athlete. You can also use pro to refer to sports that are played by professional athletes.

The domain name pro is a generic top-level domain in the Domain Name System of the Internet. Its name is derived from professional, indicating its intended use by certified professionals.

Feb 2, 2026 · pro (plural pros) (slang, historical) A chemical prophylaxis taken after sex to avoid contracting venereal disease.

pro- comes from Greek, and has the meaning "before, beforehand, in front of'': proboscis; prophylactic; prothesis. pro- is also attached to a word and means "primitive or early form'': prodrug; prosimian.