بحر

بُحْرَانٌ حران بحر بحران , a post-classical word, (S, K,) used by the physicians, signifying The crisis of a disease; the sudden change which happens to a sick person, (S, TA,) and the commencement of convalescence, (TA,) in acute diseases; (S, TA;) at a time fixed by some motion in the heavenly bodies, mostly by a motion of the moon; being a change to health or to the contrary: a word [said to be] of Greek origin. (The Nuzheh of the sheykh Dáwood El-Antákee, cited in the TA.) [Pl. بَحَارِينُ.] They say, هٰذَا يَوْمُ بُحْرَانٍ and يَوْمٌ ↓ بَاحُورِىٌّ [ This is the day of a crisis of a disease ]: باحورىّ being anomalous: (S, K:) [perhaps from البَاحُورُ signifying “ the moon, ” because the crisis of a disease is thought to be mostly fixed by a motion of the moon: or] as though it were a rel. n. of بَاحُورٌ and بَاحُورَاآءُ meaning the “ vehemence of heat in [the month of] تَمُّوز. ” (S.)