Genethliacs

• (n.) The science of calculating nativities, or predicting the future events of life from the stars which preside at birth.
Found on http://thinkexist.com/dictionary/meaning/genethliacs/

Genethliacs

Ge·neth'li·acs noun The science of calculating nativities, or predicting the future events of life from the stars which preside at birth. Johnson.
Found on http://www.encyclo.co.uk/webster/G/18