Also found in: Thesaurus, Medical, Legal, Acronyms, Idioms, Wikipedia.
Related to pros: Pros and Cons

pro 1

n. pl. pros
1. An argument or consideration in favor of something: weighing the pros and cons.
2. One who supports a proposal or takes the affirmative side in a debate.
In favor; affirmatively: arguing pro and con.
Affirmative; supporting: a pro vote.

[Middle English, from Latin prō, for; see per in Indo-European roots.]

pro 2

 (prō) Informal
n. pl. pros
1. A professional, especially in sports.
2. An expert in a field of endeavor.
Professional: pro football.


public relations officer


1. proscenium.
2. prosody.
References in classic literature ?
He read many wise things in books, but he could only judge from his own experience (he did not know whether he was different from other people); he did not calculate the pros and cons of an action, the benefits which must befall him if he did it, the harm which might result from the omission; but his whole being was urged on irresistibly.
Et vobis quaso, domine reverendissime, pro misericordia vestra.
Tiberius in a letter to him saith, Haec pro amicitia nostra non occultavi; and the whole senate dedicated an altar to Friendship, as to a goddess, in respect of the great dearness of friendship, between them two.
He harangued the two women ex traordinarily, with much of his shirt hanging out of his waistbelt, stamping his foot, turning from one to the other, sometimes throwing both his arms to gether, straight up above his rumpled hair, and keeping them in that position while he uttered a passage of loud denunciation; at others folding them tight across his breast--and then he hissed with indignation, elevating his shoulders and pro truding his head.
It doesn't matter, because in latitude 44 d south and somewhere halfway between Good Hope and New Zealand the tail shaft broke and the pro peller dropped off.
The ship had been amply pro visioned for the passage, but, somehow or other, several barrels of meat were found spoiled on open ing, and had been thrown overboard soon after leaving home, as a sanitary measure.