As a deity name
Name 376 of the Rama Sahasranāma — Padma Purana / Skanda Purana, as taught by Lord Shiva to Goddess Parvati
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
the moon
Scripturally attestedWhy this matches what you typed
M1 · same meaning "amṛtāṃśave" is the dative of "amṛtāṃśu" — the same word in a different grammatical case.
Dictionary citations
Monier-Williams (1899) · अमृतांशु (linked stem)
amṛtāṃśu m. the moon, Kathās.
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