AL-WÂJIB AL-WUJÛD - الواجب الوجود
Literally: The Necessarily existent One. Self-existent.
One of the attributes of Allah, Whose existence is necessary, azalî and eternal. He is self-existent; therefore, the existence of everything is dependent on Him, but His existence is not dependent on anything.
(Please refer to the compilation on Al-Wâjib Al-Wujûd.)