المعنى الاصطلاحي :

Rapid recitation of the Qur’an while observing the rules of "tajweed" (rules governing pronunciation during the recitation of the Qur’an).

الشرح المختصر :

"Hadr" (rapid recitation) is a method of reciting the Qur’an. It is an easy, rapid, and light method of recitation that utilizes "qasr" (short form of "madd" [elongation]), "taskeen" (the letter having no long or short vowels), "ikhtilās" (omission of the "dammah" sound), "badal" (substituted "madd"), "idghām kabeer" (total merging of two letters), "takhfeef al-hamzah" (reading the letter hamzah with a light accent), etc., without compromising the proper way in which letters should be articulated. This method must be accompanied by the proper articulation of each letter and observing the rules that apply to those letters in different situations including vowelling, un-vowelling, "ghunnah" (nasalization), and the like. The "hadr" method of recitation was adopted by Ibn Katheer, Abu Ja‘far, and other senior reciters who apply the rule of shortening the separated elongation known as "qasr al-munfasil".

التعريف اللغوي المختصر :

"Hadr": speeding up. Original meaning: descending and going down from a high place.