The meaning of the name Thalia is To Blossom Or Flourish. The origin of the name Thalia is Greek. This is the culture in which the name originated, or in the case of a word, the language.
In Greek mythology, Thalia/Thaelia is the eight born of the nine muses, a goddess who presided over comedy and idyllic poetry. Thalia is the daughter of Zeus and Mnemosyne. Possibly from the word root thallo meaning "to blossom."