د ھ مd-h-m
— اَدْهَمadham (on the pattern اَفْعَلafʿal of colours, feminine دَهْمَاءdahmāʾ): deep black; also used of intense verdure, when greenery turns almost black.Form ifʿilāl اِدْهَامَّ يَدْهَامُّ اِدْهِيْمَامًاidhāmma yadhāmmu idhīmāman: to become deep green or blackish.
مُدْهَامَّةmudhāmmah (active participle, ism fāʿil, dual مُدْهَامَّتَانmudhāmmatān): deep green. Only once in the Quran: ﴿مُدْهَآمَّتٰنِ﴾ (Ar-Raḥmān 55:64) — i.e. both gardens are deep green.