Shiva means auspiciousness, and lingam means a sign or a symbol, so the Shivalinga is regarded as a "symbol of the great God of the universe who is all-auspiciousness".

Shiva means auspiciousness, and lingam means a sign or a symbol, so the Shivalinga is regarded as a "symbol of the great God of the universe who is all-auspiciousness". Shiva also means "one in whom the whole creation sleeps after dissolution". The worship of the lingam originated from the famous hymn in the Atharva-Veda Samhita sung in praise of the Yupa-Stambha, the sacrificial post. In that hymn, a description is found of the beginningless and endless Stambha , and it is shown that the said Stambha is put in place of the eternal Brahman. Just as the Yajna (sacrificial) fire, its smoke, ashes, and flames, the Soma plant, and the ox that used to carry on its back the wood for the Vedic sacrifice gave place to the conceptions of the brightness of Shiva's body, his tawny matted hair, his blue throat, and the riding on the bull of the Shiva, the Yupa-Skambha gave place in time to the ShivaLinga. In Linga Purana, the same hymn is expanded in the shape of stories, meant to establish the glory of the great Stambha and the superiority of Shiva as Mahadeva. Jyotirlinga means "The Radiant sign of The Almighty". The glory of the twelve Jyotirlingas is mentioned in the Shiva Purana.!
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