As a deity name
Name 901 of the Rama Sahasranāma — Padma Purana / Skanda Purana, as taught by Lord Shiva to Goddess Parvati
As a Hindi name
विश्वेश्वर · noun · masculine
ईश्वर · शिव की एक मूर्ति का नाम — Śabdasāgara
As a Sanskrit word
Meaning
the Nakṣatra Uttarāṣāḍhā
Scripturally attested Verified derivationMultiple readings (3)Why this matches what you typed
The spelling you confirmed, विश्वेश्वर, is itself a dictionary headword — no grammatical transformation stands between what you typed and the meaning above.
Dictionary citations
N. of a form of Śiva (esp. worshipped in Benares), RTL. 50; 437 &c.
of various authors and other persons, Cat.
viśveśvara n. (prob.) N. of a place, Cat.
the Nakṣatra Uttarāṣāḍhā, VarBṛS.
viśveśvara m. (-raḥ) ŚIVA, under a form or appellation in which especially he is worshipped at Benares, where a celebrated temple is appropriated to him in the character of lord or god of the universe. E. viśva the universe, and īśvara god; also similar compounds, as viśveśa, viśvanātha, &c.
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