POSITIVE a. 2 definitions
Ant: negative pole. (b) (Magnetism) The north pole. [R.] -- Positive quantity (Alg.), an affirmative quantity, or one affected by the sign plus [+]. -- Positive rotation (Mech.), left-handed rotation. -- Positive sign (Math.), the sign [+] denoting plus, or more, or addition.
PRO adv.
For, on, or in behalf of, the affirmative side; -- in contrast with Ant: con. 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.