(ک) حَصُنَ يَحْصُنُ حَصَانَةًḥaṣuna yaḥṣunu ḥaṣānatan: to be strong and firm, to be secure.
حِصْنٌḥiṣn pl. حُصُوْنٌḥuṣūn: a strong place, fortress. ﴿مَّانِعَتُهُمْ حُصُوْنُهُمْ مِّنَ اللّٰهِ﴾ (Al-Ḥashr 59:2)
Form IV (ifʿāl) اَحْصَنَ يُحْصِنُ اِحْصَانًاaḥṣana yuḥṣinu iḥṣānan: to guard, to protect, to make secure. ﴿وَالَّتِيْٓ اَحْصَنَتْ فَرْجَهَا﴾ (Al-Anbiyāʾ 21:91)
مُحْصِنٌmuḥṣin (active participle, ism fāʿil): one who guards. ﴿مُحْصِنِيْنَ غَيْرَ مُسٰفِحِيْنَ﴾ (An-Nisāʾ 4:24)
مُحْصَنَةٌmuḥṣanah (passive participle, ism mafʿūl): guarded (f.); with this basic sense it occurs in the Quran in several meanings: (1) a married woman: ﴿وَالْمُحْصَنٰتُ مِنَ النِّسَآءِ﴾ (An-Nisāʾ 4:24); (2) a free woman, i.e. one who is not a slave-girl, a woman of family: ﴿وَمَنْ لَّمْ يَسْتَطِعْ مِنْكُمْ طَوْلًا اَنْ يَّنْكِحَ الْمُحْصَنٰتِ﴾ (An-Nisāʾ 4:25); (3) chaste, virtuous: ﴿اِنَّ الَّذِيْنَ يَرْمُوْنَ الْمُحْصَنٰتِ الْغٰفِلٰتِ﴾ (An-Nūr 24:23)
Form II (tafʿīl) حَصَّنَ يُحَصِّنُ تَحْصِيْنًاḥaṣṣana yuḥaṣṣinu taḥṣīnan: to make very strong, to fortify thoroughly.
مُحَصَّنَةٌmuḥaṣṣanah (passive participle, ism mafʿūl): strongly fortified (f.). ﴿لَا يُقَاتِلُوْنَكُمْ جَمِيْعًا اِلَّا فِيْ قُرًي مُّحَصَّنَةٍ﴾ (Al-Ḥashr 59:14)
Form V (tafaʿʿul) تَحَصَّنَ يَتَحَصَّنُ تَحَصُّنًاtaḥaṣṣana yataḥaṣṣanu taḥaṣṣunan: to guard oneself, to keep oneself safe. ﴿اِنْ اَرَدْنَ تَحَصُّنًا﴾ (An-Nūr 24:33)