Islamic state of iraq and sireea---ISIS
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The full form of ISIS is Islamic State of Iraq and Syria.

It has got two meanings
(i) Egyptian goddess of fertility; daughter of Geb; sister and wife of Osiris
(ii) The Pakistan intelligence agency; a powerful and almost autonomous political and military force; has procured nuclear technology and delivery capabilities; has had strong ties with the Taliban and other militant Islamic groups.

Hope this helps:)
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Please mark it as the brainliest answer.