Meaning unknown, most likely of North African or Phoenician origin. In the 4th century this name was borne by the North African saint Monica of Hippo, the mother of Saint Augustine, whom she converted to Christianity. Since the Middle Ages it has been associated with Latin moneo "advisor" and Greek monos "one".
The meaning of the name Adonica is From Adam And Monica. The origin of the name Adonica is American. This is the culture in which the name originated, or in the case of a word, the language. People who like the name Adonica also like: Aerilyn, Ansleigh, Aubrianna, Acacia, Athena, Aphrodite, Abrianna.