pro

adv. For, on, or in behalf of, the affirmative side; -- in contrast with con. [ 1913 Webster ]

Pro and con, for and against, on the affirmative and on the negative side; as, they debated the question pro and con; -- formerly used also as a verb. --
Pros and cons, the arguments or reasons on either side. [ 1913 Webster ]

[ L. pro, or Gr. &unr_;. See Pro. ] A prefix signifying before, in front, forth, for, in behalf of, in place of, according to; as, propose, to place before; proceed, to go before or forward; project, to throw forward; prologue, part spoken before (the main piece); propel, prognathous; provide, to look out for; pronoun, a word instead of a noun; proconsul, a person acting in place of a consul; proportion, arrangement according to parts. [ 1913 Webster ]

n. [ Malay prā&unr_;, prāh&unr_;. ] (Naut.) A sailing canoe of the Ladrone Islands and Malay Archipelago, having its lee side flat and its weather side like that of an ordinary boat. The ends are alike. The canoe is long and narrow, and is kept from overturning by a cigar-shaped log attached to a frame extending several feet to windward. It has been called the flying proa, and is the swiftest sailing craft known. [ 1913 Webster ]

v. i. See Approach. [ Obs. ] [ 1913 Webster ]

{ } n. [ See Provender. ] Provender or food. [ Obs. ] [ 1913 Webster ]

One pease was a soldier's provant a whole day. Beau. & Fl. [ 1913 Webster ]

n. [ Pref. pro- + atlas. ] (Anat.) A vertebral rudiment in front of the atlas in some reptiles. [ 1913 Webster ]

n. The doctrine of the probabiliorists. [ 1913 Webster ]

n. [ From L. probabilior, compar. of probabilis probable. ] (Casuistry) One who holds, in opposition to the probabilists, that a man is bound to do that which is most probably right. [ 1913 Webster ]