Dvyanuka

Dvyanuka (Sanskrit: द्व्यणुक, Romanised: Dvyaṇuka) is the combination of two Paramāṇus of the same type mentioned in the text Vaisheshika Sutra of the Vaisheshika school of thought in the Indian philosophy. According to Vaisheshika school, Dvyanukas are formed when two Parāmaṇus of the same type come into close proximity and under the influence of specific forces.

According to the Indian Journal of History of Science, the Indian philosopher Praśastapāda first introduced the theory of the Dvyanuka in the Vaisheshika school of Indian philosophy. Later, the other prominent Indian philosopher Udyanacharya from the Vaisheshika school in Mithila, made some certain modifications in the theory of Dvyanuka.

In the text Vaisheshika, Praśastapāda introduced Dvyanuka as the first product out of the Paramanus of introduced by the ancient Vedic philosopher Kaṇāda.