Ra- : A prefix, from the Latin re and ad combined, coming to us through the French and Italian. See Re-, and Ad-.

Example:
What should I do with a deadbeat RA and a dorm full of chaos?

Taxonomy
Ra, sun, deities, Atum, myths, Eye of Ra, Horus, sun-god Ra, God Ra, Amun, pharaohs, the underworld, Hathor, cult, Egyptians, falcon, disk, Osiris.

Defination from the web:
Ra (pronounced as Rah, and sometimes as Re) is the ancient Egyptian sun god. ... Ra changed greatly over time and in one form or another, much later he was said to represent the sun at all times of the day. ...