As a deity name
Name 268 of the Lakshmi Sahasranāma — Skanda Purana / Sanat Kumara Samhita, as taught by Sages Sanatkumara and Devotees
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
thoughtful, intelligent, wise, sage, prudent, &c. &c. — feminine form of manīṣin
Scripturally attestedWhy this matches what you typed
M1 · same meaning "manīṣiṇī" is the feminine form of "manīṣin" — the same word with the feminine ending (vocative dual).
Dictionary citations
manīṣin mfn. thoughtful, intelligent, wise, sage, prudent, RV. &c. &c.
devout, offering prayers or praises, RV.
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