conjugate
n.n. a group of things that are related to each other in a specific way. In math, it is a pair of numbers or expressions that are linked by a sign change.
n. a group of related entities or a pair of mathematical expressions that are connected by a specific transformation, such as a sign change. Often used in the context of complex numbers or grammar to describe related forms.
The two complex numbers are conjugates of each other.
In grammar, the verb 'to be' has several conjugates depending on the subject and the tense.
The chemical properties of the conjugate base are determined by the strength of the original acid, illustrating a fundamental principle in acid-base chemistry.
The adjective (as “combined, united”) and noun are first attested in 1471, in Middle English, the verb in 1530; partly from Middle English conjugat(e) (“combined, united”), partly directly borrowed from New Latin coniugātus, the perfect passive participle of Latin coniugō (“to yoke together, combine; (New Latin) to conjugate, decline, inflect”) (see -ate (etymology 1, 2 and 3)), from con- (“with”) + iugō (“to join”). In Classical Latin, the word for conjugate (grammar) was dēclīnō, coniugō is a later back-formation from post-classical coniugātiō (“conjugation, declension”).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Last updated May 20, 2026