akshara

Akshara (Sanskrit ) may mean:in Sanskrit grammar, "syllable", see Shikshaa grapheme of script of the Brahmic family. in philosophical terms is the opposite of the word "perishable", a name of Brahma.
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Akshara aksara (Sanskrit) [from a not + kshara flowing from the verbal root kshar to flow, melt away] Imperishable; name of Brahman, also on occasion of Siva and Vishnu, signifying their enduring, imperishable nature for the term of the mahamanvantara. Krishna tells Arjuna that there are two Purushas in the world -- kshara and akshara -- the perishable and the imperishable; that all beings are kshara in the sense used by the Greek philosopher Heraclitus: panta rhei (all things flow); and that which dies not is akshara (BG 15:16-17). But the highest Purusha is still another, the paramatman (supreme atman).