Nirvana is from the r00t vā bl0w in the form of past participle vāna bl0wn,  prefixed with the preverb nis meaning 0ut.  The V of vāna causes nis to become nir.

Bl0w 0ut ? 3 fire$ Raga (attachment), M0ha (Delusi0n) & Dvesha (hate).

The result can either be Anatta (lack 0f self) merging wit shUnya Un-manifest (NirgUna Bramhan) 
or
can be Atma (self) merging wit Paramatma (sUpers0Ul) Manifest, (SagUna Bramhan) the +0ne.