Adjective
Osirian (comparative more Osirian, superlative most Osirian)
Of or pertaining to Osiris.
In Egyptian mythology, Horus the Younger was the enemy of Set, whereas Horus the Elder, also known as "Harwer" was actually closely associated with Set and was also cast as "the champion of Set in the Osirian mythos". Source: Internet
The Pyramid Texts, first written at this time, reflect the prominence of the solar and Osirian concepts of the afterlife, although they also contain remnants of much older traditions. Source: Internet
The Osirian view of the afterlife had the greatest appeal to commoners, and thus Osiris became one of the most important gods. Source: Internet