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pro

 - 24 dictionary results
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pro

1  [proh] adverb, noun, plural pros.
Use pro in a Sentence
–adverb
1. in favor of a proposition, opinion, etc.
–noun
2. a proponent of an issue; a person who upholds the affirmative in a debate.
3. an argument, consideration, vote, etc., for something.
Compare con 1 .

Origin:
1350–1400; ME < L prō (prep) in favor of, for; akin to per-, Gk pró, Skt pra
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pro

2  [proh] adjective, noun, plural pros. Informal.
–adjective
1. professional.
–noun
2. professional.
3. the pros, the professional athletic leagues, as of football, baseball, or basketball: He's sure to be signed by the pros.
Origin:
1840–50; shortened form

pro

3  [proh]
–noun, plural pros. Slang.
prophylactic (def. 5).
Origin:
shortened form

pro

  [proh; Eng. proh]
–preposition Latin.
for.

PRO

 
public relations officer.
Also, P.R.O.

Pro

 
Biochemistry.
proline.

pro-

1 
1. a prefix indicating favor for some party, system, idea, etc., without identity with the group (pro-British; pro-Communist; proslavery), having anti- as its opposite.
2. a prefix of priority in space or time having especially a meaning of advancing or projecting forward or outward, and also used to indicate substitution, attached widely to stems not used as words: provision; prologue; proceed; produce; protract; procathedral; proconsul.
Origin:
< L prō-, pro-, comb. form repr. prō pro 1

pro-

2 
a prefix identical in meaning with pro-1 , occurring in words borrowed from Greek (prodrome) or formed of Greek (and occasionally Latin) elements.
Origin:
< Gk, comb. form of pró for, before; see pro 1

pro⋅line

  [proh-leen, -lin]
–noun Biochemistry.
an alcohol-soluble amino acid, C4H9NHCOOH, occurring in high concentration in collagen. Abbreviation: Pro; Symbol: P
Origin:
1900–05; alter. of pyrrolidine
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To pro
pro 1   (prō)   
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.

adv.  In favor; affirmatively: arguing pro and con.
adj.  Affirmative; supporting: a pro vote.

[Middle English, from Latin prō, for; see per1 in Indo-European roots.]
pro 2   (prō)   
n.   pl. pros

  1. A professional, especially in sports.

  2. An expert in a field of endeavor.

adj.  Professional: pro football.
PRO  
abbr.  public relations officer
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Slang Dictionary
pro

  1. n.
    a professional (at anything); someone as good as a professional. : When it comes to typing, he's a pro.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
Cite This Source
Word Origin & History

pro- 
prefix meaning "before, forward, in favor of, in place of," from L. pro "on behalf of, in place of, before, for," also in some cases from cognate Gk. pro "before, in front of," both from PIE *pro-, extended form of base *por- "forward, through" (cf. Skt. para "beyond," pra- "before, forward, forth;" Gk. paros "before," para- "from beside, against, beyond;" Goth. faura "before," O.E. fore "before, for, on account of," fram "forward, from"). Pro and con is attested from c.1400, short for pro and contra "for and against" (L. pro et contra).

pro 
1866, shortening of professional. The adj. is first recorded 1932. Pro-am "including professionals and amateurs" is from 1949.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: Pro
Function: abbreviation
proline; prolyl

Main Entry: PRO
Function: abbreviation
peer review organization

Main Entry: pro·line
Pronunciation: 'prO-"lEn
Function: noun
: an amino acid C5H9NO2 that can be synthesized byanimals from glutamate—abbreviation Pro
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
Cite This Source
Medical Dictionary

Pro abbr.
proline

pro- pref.

  1. Earlier; before; prior to: progenitor.

  2. Rudimentary: pronucleus.

  3. Anterior; in front of: procephalic.

proline pro·line (prō'lēn')
n.
Abbr. Pro
An amino acid that is found in most proteins and is a major constituent of collagen.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
proline   (prō'lēn')  Pronunciation Key 
A nonessential amino acid. Chemical formula: C5H9NO2. See more at amino acid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Abbreviations & Acronyms
pro

  1. professional

  2. prostitute

PRO

  1. peer review organization

  2. professional review organization

  3. pronoun

  4. public relations officer

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
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