<p><strong>Adjective</strong></p><ul><li>Imposing, containing, subject to, or depending on a condition or conditions; not absolute; made or allowed on certain terms: conditional acceptance.</li><li>Synonyms: relative, contingent, dependent.</li><li>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."</li><li>Logic: (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.</li><li>(Of a syllogism) containing at least one conditional proposition as a premise.</li><li>Mathematics: (of an inequality) true for only certain values of the variable, as x + 3 &gt; 0 is only true for real numbers greater than −3.</li></ul><p><strong>Noun</strong></p><ul><li>Grammar: (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”).</li><li>A sentence, clause, or word expressing a condition.</li></ul>