تَمَكَّنَ
1.
i. q.
اِسْتَقَرَّ: (Msb, article قر:) it is very often used in this sense, as meaning He, or it, settled; became fixed, or established; it became fixed, or steady, in its place; when said of a man, particularly implying in authority and power: see قَرَّ.
2.
تَمَكَّنَ مِنْ شَىْءٍ, and
اِسْتَمْكَنَ, He became possessed of mastery, or dominion, or ascendancy, or authority, and power, over a thing; he was able to avail himself of it: [he was, or became, within reach of him, or it.] (Msb.)
3.
تَمَكَّنَ مِنْهُ
He assumed authority over him.