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.