what is the meaning of Az wa Jal ?

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.

The word ‘Azza’ is derived from ‘Izzah’, which means might and power and the word ‘Jalla’ is derived from Al-Jalaal, which means greatness and reverence. Therefore, the term Azza wa Jalla is an attribute of Allaah which means that He is the Owner of Greatness and Reverence and that He is The Most Strong Who is never defeated. 

Allaah Knows best.