As a deity name
Name 152 of the Narasimha Sahasranāma — Brahmanda Purana / Narasimha Purana, as taught by Sages to Assembly of Devotees
Name 747 of the Rama Sahasranāma — Padma Purana / Skanda Purana, as taught by Lord Shiva to Goddess Parvati
Name 2 of the Surya Sahasranāma — Bhavishya Purana, as taught by Lord Brahma / Sages
Name 334 of the Vishnu Sahasranāma — Mahabharata (Anushasana Parva), as taught by Bhishma to Yudhishthira on his deathbed
As a Hindi name
आदिदेव · noun · masculine
ब्रह्मा · विष्णु · शिव — Śabdasāgara
As a Sanskrit word
Meaning
‘the first god’
Scripturally attested Verified derivationMultiple readings (3)Why this matches what you typed
The spelling you confirmed, आदिदेव, is itself a dictionary headword — no grammatical transformation stands between what you typed and the meaning above.
Dictionary citations
ādi—deva m. ‘the first god’
N. of Brahman, Viṣṇu, Śiva, Gaṇeśa, the sun.
ādideva m. (-vaḥ) Name of VIṢṆU or NĀRĀYAṆA. E. ādi the first, and deva a god, the first god, the creator.
Alternative readings
More than one analysis survives full verification. That ambiguity is real, so we show every reading rather than pick one silently.
Caveats
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