The sciences of the Qur'aan

Construct

عُلُومُ الْقُرْآنِ 


عُلُومِ - is the plural of علم which means knowledge and the plural means sciences in the sense of a systematically organized body of knowledge on a particular subject


الْقُرْآنِ - Refers to the Qur'aan which is the Holy Book of the Muslims


Together the phrase means

The sciences of the Qur'aan or

The systematically organized body of the branches of knowledge of [i.e. related to] the Qur'aan