رَاسِخٌ
Root: رسخ
Full Definition
رَاسِخٌ
Anything firm, steady, steadfast, stable, fixed, fast, settled, or established [in its place ]. You say جَبَلٌ رَاسِخٌ
A firm, or steadfast, mountain. And in like manner دِمْنَةٌ رَاسِخَةٌ [A black, or dark, patch of compacted dung and urine of cattle sticking fast upon the ground]. And [hence,] لَهُ قَدَمٌ
رَاسِخَةٌ فِى العِلْمِ [He has a firm footing in science, or knowledge; or] he possesses excellence, and large acquirements, in science, or knowledge. الرَّاسِخُونَ فِى العِلْمِ [in the Kur iii. 5 and iv. 160] means Those who are firmly rooted, or established, in science, or knowledge: or who have made a firm advance therein: or who are far advanced therein: or those who study the Book of God: or those who have committed [it] to memory, and who call to mind [its doctrines and precepts] one with another.