From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): (n.) A conditional word, mode, or proposition.

(2): (a.) Containing, implying, or depending on, a condition or conditions; not absolute; made or granted on certain terms; as, a conditional promise.

(3): (a.) Expressing a condition or supposition; as, a conditional word, mode, or tense.

(4): (n.) A limitation.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]

Strict Calvinists maintain that the decrees of God with regard to the salvation or damnation of individual men are absolute; Arminians, that they are conditional. The Pelagian doctrine is that God's will to grant grace to men is always conditioned on their so using their natural power as to merit that grace. To say that God decrees to save all men if they will, i.e. if they, without grace, are willing to obey God, is Pelagian; to say that God wills to save all men if they will use the prevenient grace given to them, which they are left at liberty to resist, is Arminian. (See Arminianism); (See Grace).