tantra/ˈtʌntɹə/EtymologyFrom Sanskrit तन्त्र (tantra), from Proto-Indo-European *ten-tlo- /*tn̥-tlo-, from *ten- (“to stretch, extend”) with the suffix *-tlom denoting instruments. Doublet of tar (“string instrument”).nameThe esoteric traditions of Hinduism and Buddhism that developed in India from the middle of the 1st millennium CE onwards.nounA Hindu or Buddhist religious or esoteric text.