Conjugate can be:

• in mathematics
  • in terms of complex numbers, the complex conjugate; more generally see conjugate element (field theory).
  • in differential geometry, Conjugate points
  • in group theory, Conjugacy class or Conjugate closure
  • an operation on Latin squares
• in chemistry, Conjugate acid or conjugate base
• in linguistics, grammatical conjugation
• in biology, conjugation is sexual reproduction involving interchange of DNA between cells, rather than their fusion. Various forms of conjugation exist in different groups, such as bacteria (see bacterial conjugation) and ciliates.