اعتقدهُ

: see 1, first sentence:

and see also 1 in the latter half.

اعتقد كَذَا, (Msb,) or اعتقد كَذَا بِقَلْبِهِ, (S, O,) He settled, or determined, his heart, or mind, firmly upon such a thing; or he held, adhered, or clave, to such a thing with the heart, or mind; i. q. عَلَيْهِ ↓ عَقَدَ القَلْبَ وَالضَّمِيرَ; (Msb;) [he believed, or believed firmly, or was firmly persuaded of, such a thing: this is its most usual meaning;] he was, or became, certain, or sure, of such a thing. (PS.) [It is mostly used in relation to matters of religion, to religious dogmas and the like.] See also عَقِيدَةٌ.

اعتقد also signifies He acquired, (S, Mgh, O, L, K,) or bought, (A,) an estate consisting of land, or of land and a house, &c., (S, A, O, L, K,) or other property: (S, A, Mgh, O, L, K:) he collected property. (Mgh, * Msb.) Also, [without any objective complement expressed,] He bought what is termed عُقْدَة, i. e. an estate, or a property, consisting in land or houses. (L.)

And اعتقد أَخًا فِى اللّٰهِ He adopted a brother in God. (A.)

اعتقد الدُّرَّ, and الخَرَزَ, He made the pearls, and the beads, into a necklace; and in like manner, other things. (L.)

-A2- اعتقد said of a date-stone, (A,) or other thing, (S, O, L,) [as also ↓ انعقد, which frequently occurs in the lexicons &c. in the sense here following,] It became hard. (S, A, O, L.)

And hence, [so in the A,] اعتقد بَيْنَهُمَا الإِخَاءُ Fraternity became true, or sincere, and firmly established, between them two: (A:) and [in like manner] ↓ تعقّد it (i. e. fraternity) became firmly established. (L.)

And according to Ibn-Buzurj, اعتقد signifies He (a man) closed, or locked, a door upon himself, when in want, that he might die: (O:) thus Sh found in the Book of Ibn-Buzurj, i. e. اعتقد, with ق: (TA in article عفد:) but others say that it is اعتفد, with ف: (O:) [or] اعتقد and اعتفد signify the same. (K.)