As a Hindi name
पूर्णिमासी · noun · feminine
पूर्णमासी । पूर्णिमा — Śabdasāgara
As a Sanskrit word
Meaning
The day of full moon
Verified derivationMultiple readings (4)Why this matches what you typed
The spelling you confirmed, पूर्णिमासी, is itself a dictionary headword — no grammatical transformation stands between what you typed and the meaning above.
Dictionary citations
pūrṇimāsī f. (according to some) = paurṇamāsī, q.v., L.
pūrṇimā, pūrṇimāsī, pūrṇamā The day of full moon; N. 2. 76.
Alternative readings
More than one analysis survives full verification. That ambiguity is real, so we show every reading rather than pick one silently.
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