From Wiktionary, the free dictionary
Abstracted away from European female given names commonly ending in -a.
-ա • (-a)
- (neologism, rare) Forming fanciful female given names
- Արեգ (Areg, a male given name) + -ա (-a) → Արեգա (Arega)
- Սևան (Sewan, name of a lake) + -ա (-a) → Սևանա (Sewana)