pro- 1
prefix
1 favoring; supporting : pro-choice | pro-life.
2 acting as a substitute or deputy for; on behalf of; for : proconsul | procure.
3 denoting motion forward, out, or away : proceed | propel | prostrate. ORIGIN from Latin pro ‘in front of, on behalf of, instead of, on account of.’

pro- 2
prefix
before in time, place, order, etc. : proactive | prognosis | program.
ORIGIN from Greek pro ‘before.’
PRO
abbreviation
• public relations officer.
• Brit. Public Record Office.

pro 1 |prō|
noun ( pl. pros) informal
a professional, esp. in sports : a tennis pro.
adjective
(of a person or an event) professional : a pro golfer. ORIGIN mid 19th cent.: abbreviation.

pro 2
noun ( pl. pros) (usu. pros)
an advantage of something or an argument in favor of a course of action : the pros and cons of joint ownership.
preposition & adverb
in favor of : [as prep. ] they were pro the virtues of individualism.
ORIGIN late Middle English (as a noun): from Latin, literally ‘for, on behalf of.’
haris.pro