<p><strong>Verb</strong></p><ul><li><p>(used with object)</p><ul><li>Grammar: To inflect (a verb).</li><li>To recite or display all or some subsets of the inflected forms of (a verb), in a fixed order: One conjugates the present tense of the verb “be” as “I am, you are, he is, we are, you are, they are.”</li><li>To join together, especially in marriage.</li></ul></li><li><p>(used without object)</p><ul><li>Biology: To unite; to undergo conjugation.</li><li>Grammar: To be characterized by conjugation: The Latin verb esse does not conjugate in the passive voice.</li></ul></li></ul><p><strong>Adjective</strong></p><ul><li>Joined together, especially in a pair or pairs; coupled.</li><li>Botany: (of a pinnate leaf) Having only one pair of leaflets.</li><li>Grammar: (of words) Having a common derivation.</li><li>Bibliography: (of two leaves in a book) Forming one sheet.</li><li>Mathematics: (of two points, lines, etc.) So related as to be interchangeable in the enunciation of certain properties.</li><li>(of an element) So related to a second element of a group that there exists a third element of the group that, multiplying one element on the right and the other element on the left, results in equal elements.</li><li>(of two complex numbers) Differing only in the sign of the imaginary part.</li><li>Chemistry: Of or noting two or more liquids in equilibrium with one another.</li><li>(of an acid and a base) Related by the loss or gain of a proton: NH3 is a base conjugate to NH4+. NH4+ is an acid conjugate to NH3.</li></ul><p><strong>Noun</strong></p><ul><li>One of a group of conjugate words.</li><li>Mathematics: Either of two conjugate points, lines, etc.</li><li>Also called complex conjugate: Either of a pair of complex numbers of the type a + bi and a − bi, where a and b are real numbers and i is imaginary.</li></ul>