What are Christian theologeans referring to when they talk about "God's glory"?

What is God's "glory" in Christian theology? (If it differs based on which branch of the church is using the term, give me a brief summary of the Catholic, Orthodox, and Protestant views.) Are we talking about God's "**glowing radiance**" when we speak of His glory, or does it have more to do with other peoples' "**recognition and honor**" of Him?