pro

:  on the affirmative side :  in affirmation much has been written pro and con

:  in favor of :  for

:  professional

public relations officer

1a :  earlier than :  prior to :  before prothalamionb :  rudimentary :  prot- pronucleusc :  precursory proinsulin

2a :  located in front of or at the front of :  anterior to procephalicb :  front :  anterior prothorax

3 :  projecting prognathous

1 :  taking the place of :  substituting for procathedral procaine

2 :  favoring :  supporting :  championing pro-American

:  an argument or evidence in favor of something We weighed the pros and cons of wind power.

:  in favor of something We heard arguments pro and con.

:  professional pro athletes He sank the putt like a pro.

:  approving :  in favor of

proline; prolyl

peer review organization