(ن) فَطَرَ يَفْطُرُ فَطْرًاfaṭara yafṭuru faṭran: to split a thing open and bring something out of it; hence (1) to split, to cleave (2) to bring into existence for the first time, to originate. ﴿فِطْرَتَ اللّٰهِ الَّتِيْ فَطَرَ النَّاسَ عَلَيْهَا﴾ (Ar-Rūm 30:30)
فِطْرَةٌfiṭrah (noun, ism dhāt): the natural disposition and constitution bestowed upon a being. ﴿فِطْرَتَ اللّٰهِ الَّتِيْ فَطَرَ النَّاسَ عَلَيْهَا﴾ (Ar-Rūm 30:30)
فَاطِرٌfāṭir (active participle, ism fāʿil): the Originator, He who brings into existence for the first time. ﴿اَلْحَمْدُ لِلّٰهِ فَاطِرِ السَّمٰوٰتِ وَالْاَرْضِ﴾ (Fāṭir 35:1)
فَطْرٌfaṭr pl. فُطُوْرٌfuṭūr (also a noun, ism dhāt): rift, fissure. ﴿هَلْ تَرٰى مِنْ فُطُوْرٍ﴾ (Al-Mulk 67:3)
Form IV (ifʿāl) أَفْطَرَ يُفْطِرُ إِفْطَارًاafṭara yufṭiru ifṭāran: to break the fast (this verb is not used in the Quran).
Form V (tafaʿʿul) تَفَطَّرَ يَتَفَطَّرُ تَفَطُّرًاtafaṭṭara yatafaṭṭaru tafaṭṭuran: to split violently, to burst apart. ﴿تَكَادُ السَّمٰوٰتُ يَتَفَطَّرْنَ مِنْهُ﴾ (Maryam 19:90)
Form VII (infiʿāl) اِنْفَطَرَ يَنْفَطِرُ اِنْفِطَارًاinfaṭara yanfaṭiru infiṭāran: to be split, to be rent. ﴿اِذَا السَّمَآءُ انْفَطَرَتْ﴾ (Al-Infiṭār 82:1); مُنْفَطِرٌmunfaṭir (active participle, ism fāʿil): splitting, rent asunder. ﴿السَّمَآءُ مُنْفَطِرٌۢ بِهِۦ﴾ (Al-Muzzammil 73:18)