الفَتْحُ

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

الفَتْحُ is the natural state of this definite noun and it is in this state when the noun is: 1) the subject المُبْتَدَأُ or 2) the predicate الخَبَرُ or 3) اسْمُ كَانَ or 4) خَبَرُ إِنَّ or 5) الفَاعِلُ subject of a verb in the active voice or 6) نَائِبُ الفَاعِلِ subject of a verb in the passive voice or 7) it’s a noun of dependent declension a) نَعْتٌ / صِفَطٌ adjectives b) التَّوْكِيْدُ emphatic c) المَعْطُوْفٌ conjunction d) البَدَلُ synonym

To open, explain, grant, disclose, let out, give victory, conquer, judge, decide

Grammatical analysis of الفَتْحُ
اسْمٌ مَرْفُوْعٌ بِالضَّمَّةِ الزَّاهِرَةِ 
Surah/Below are the 3 verses in the holy Quran containing the nominative, definite nounالفَتْحُ
Verse
if you seek an opening then indeed, the opening came to you and if you desist then it is good for youإِنْ تَسْتَفْتِحُوا فَقَدْ جَآءَكُمُ الفَتْحُ وَإِنْ تَنْتَهُوا فَهُوَ خَيْرٌ لَّكُمْ
and if you return, We will return and not will your forces avail you a thing even if (they are) numerousوَإِنْ تَعُوْدُوا نَعُدْ وَلَنْ تُغْنِيَ عَنْكُمْ فِئَتُكُمْ شَيْئًا وَلَوْ كَثُرَتْ
8-19and Allah (SWT) is with the believersوَأَنَّ اللهَ مَعَ المُؤْمِنِيْنَ
32-28 
32-28 
32-38 
32-38 
32-38 
32-38 
32-38 
32-38 
110-1When the help of Allah (SWT) and the victory comesإِذَا جَاءَ نَصْرُ اللهِ وَالفَتْحُ