As a deity name
Name 303 of the Saraswati Sahasranāma — Skanda Purana, as taught by Lord Brahma / Sages
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
in comp. for mahat (in and; used for mahat as an independent word in acc. sg. mahām = mahāntam).
Scripturally attestedWhy this matches what you typed
M1 · same meaning "mahāyai" is the dative of "mahā" — the same word in a different grammatical case.
M1 · same meaning "mahāyai" is the dative of "mahiman" — the same word in a different grammatical case.
Related forms
Dictionary citations
mahā (ā), f. a cow, L.
Ichnocarpus Frutescens, L.
mahiman m. greatness, might, power, majesty, glory, RV. &c. &c. (˚himnā ind. or ˚hinā ind. mightily, forcibly, RV.)
the magical power of increasing size at will, Vet.; Pañcar. (cf. MWB. 245)
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