[*** \mathrm{pro}^1] | prō |

noun (plural pros) informal

a professional, especially in sports:

｟くだけて｠ プロ(の選手)(professional)

e.g. a tennis pro.

(of a person or an event) professional:

｟米｠ 〖形容詞的に〗プロの

e.g. a pro golfer.

mid 19th century: abbreviation.

[*** \mathrm{pro}^2] | prō |

noun (plural pros) (usually pros)

an advantage of something or an argument in favor of a course of action:

賛成票, 論, 賛成理由; 賛成者; 良い点

e.g. the pros and cons of joint ownership.

in favor of:

(…に)賛成して(↔ con)

e.g. as preposition : they were pro the virtues of individualism.

late Middle English (as a noun): from Latin, literally ‘for, on behalf of’.