The name Avita is a girl's name meaning "life". Avita and is often added to lists like Cool Girl Names from Ancient Cultures and discussed in our forums with posts like "Get To That Nickname".
From the experts:
Avita sounds like a drug name. In fact, it is! (It's an acne medication.) While that may not be enough to stop you, you might want to consider Aviva, Vita, or Evita (which has issues of its own) instead.