imposing, containing, subject to, or depending on a condition or conditions; not absolute; made or allowed on certain terms: conditional acceptance.
2.
Grammar. (of a sentence, clause, mood, or word) involving or expressing a condition, as the first clause in the sentence If it rains, he won't go.
3.
Logic.
a.
(of a proposition) asserting that the existence or occurrence of one thing or event depends on the existence or occurrence of another thing or event; hypothetical.
b.
(of a syllogism) containing at least one conditional proposition as a premise.
4.
Mathematics. (of an inequality) true for only certain values of the variable, as x + 3 > 0 is only true for real numbers greater than −3. Compare absolute(def. 12).
noun
5.
Grammar.
a.
(in some languages) a mood, tense, or other category used in expressing conditions, often corresponding to an English verb phrase beginning with would, as Spanish comería “he would eat.”
Origin: 1350–1400; Middle English condicionel < Anglo-French, Middle French < Late Latin condiciōnālis, equivalent to condiciōn- (stem of condiciō) condition + -ālis-al1
grammar (of a clause, conjunction, form of a verb, or whole sentence) expressing a condition on which something else is contingent: "If he comes" is a conditional clause in the sentence "If he comes I shall go"
3.
a. (of an equation or inequality) true for only certain values of the variable: x² --1 = x + 1 is a conditional equation, only true for x = 2 or --1
b. (of an infinite series) divergent when the absolute values of the terms are considered
4.
logic Also: hypothetical (of a proposition) consisting of two component propositions associated by the words if…then so that the proposition is false only when the antecedent is true and the consequent false. Usually written: p→q or p⊃q, where p is the antecedent, q the consequent, and → or ⊃ symbolizes implies