As a deity name
Name 964 of the Vishnu Sahasranāma — Mahabharata (Anushasana Parva), as taught by Bhishma to Yudhishthira on his deathbed
As a Hindi name
No reading on this path — this spelling has no entry in our Hindi sources, and no near neighbour is attested there either. We say so rather than invent one.
As a Sanskrit word
Meaning
knowing the true nature of (gen.)
Scripturally attestedWhy this matches what you typed
M1 · same meaning "tattvavit" is the nominative of "tattvavid" — the same word in a different grammatical case.
Dictionary citations
tat—tva—vid mfn. knowing the true nature of (gen.), Bhag. iii, 28
tattvavid mfn. (-vit) Knowing the truth, knowing things as they are. E. tattva, and vid who knows.
Caveats
Sources contain errors and engines have limits; every claim above carries its citation so you can verify it. This is guidance about names and their sources — not religious or astrological consultation. How we work · Our sources