Conditional \Con*di"tion*al\, a. [L. conditionalis.]

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

Every covenant of God with man . . . may justly be made (as in fact it is made) with this conditional punishment annexed and declared. --Bp. Warburton.

2. (Gram. & Logic) Expressing a condition or supposition; as, a conditional word, mode, or tense.

A conditional proposition is one which asserts the dependence of one categorical proposition on another. --Whately.

The words hypothetical and conditional may be . . . used synonymously. --J. S. Mill.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Conditional \Con*di"tion*al\, n.

1. A limitation. [Obs.]

--Bacon.

2. A conditional word, mode, or proposition.

Disjunctives may be turned into conditionals. --L. H. Atwater.

Source: Webster's Revised Unabridged Dictionary (1913)