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Conjugate means joined together in a pair, and "conjugate variables" are pairs of variables closely related to each other.  An important conjugate variable pair in thermodynamics is [[pressure]] and [[volume]].  Another important conjugate variable pair is [[temperature]] and [[entropy]].

Conjugate means joined together in a pair, and "conjugate variables" are pairs of variables closely related to each other.  An important conjugate variable pair in thermodynamics is [[pressure]] and [[volume]].  Another important conjugate variable pair is [[temperature]] and [[entropy]].