رُحْمَى
Root: رحم
Full Definition
رُحْمَى
[The saying
رَحِمَكَ ٱللّٰهُ
May God have mercy on thee; &c.;] a subst. from رَحَّمَ عَلَيْهِ [like بُقْيَا from أَبْقَى عَلَيْهِ].