ظَهْرَ

A word in the Arabic language will either be 1) a verb or 2) a noun or 3) a particle – ظَهْرَ is a noun

A noun may either be 1) Definite or indefinite 2) Masculine or feminine 3) Singular, dual or plural 4) Nominative, accusative or genitive

الظَّهْرُ is the natural state of this definite noun and becomes الظَّهْرَ due to it being the: 1) المَفْعُوْلُ بِهِ object of a verb or 2) اسْمُ of إِنَّ or 3) خَبَرُ of كَانَ or 4) المَفْعُوْلُ فِيْهِ adverb of time or place or 5) المَفْعُوْلُ لَهُ noun that gives the reason for doing a thing or 6) المَفْعُوْلُ مَعَهُ noun that comes after the و which means “along with” or 7) المَفْعُوْلُ المُطْلَقُ is the مَصْدَرٌ of the verb occurring in the sentence or 8) الحَالُ adverb of manner or 9) التَّمْيِيْزُ noun that specifies the meaning of a vague word or 10) المُسْتَثْنَى noun that comes after إِلَّا meaning “except” or 11) المُنَادَى noun of calling or 12) it’s a noun of dependent declension a) نَعْتٌ / صِفَطٌ adjectives b) التَّوْكِيْدُ emphatic c) المَعْطُوْفٌ conjunction d) البَدَلُ synonym

الظَّهْرَ loses it’s definite article, becoming ظَهْرَ due to it being a possessed noun

Back

To appear, become distinct, clear, open, come out, ascend, be manifest, mount, get the better of know, distinguish, be obvious, conspicuous, come forth, go out, have the upper hand over wound on the back, enter the noon, neglect.

مَعْرِفَةٌمُفْرَدٌمُذَكَّرٌمَنْصُوْبٌظ ه ربَابٌ فَتَحَ ظَهَرَ يَظْهَرُفَعْلٌاسْمٌاِسْمُ الجِنْسِ
DefiniteSingularMasculineAccusativeRootBack فPatternNounGeneric or common Noun
Surah/Below is the only verse in the holy Quran containing the possessed nounظَهْرَ
Verse
94-3Which weighed down your backالَّذِى أَنْقَضَ ظَهْرَكَ