ارخ

تَأْرِيخٌ ذ inf. n. of 2. ― -b2- Also, [as a subst., generally pronounced without ء,] A date; an era; an epoch; (Msb;) and ↓ أُرْخَةٌ is a subst. [signifying the same,] from أَرَخَ. (K.) تَأْرِيخُ الهِجْرَةِ is The era, or epoch, of the Emigration [or Flight (for such it really was)] of Mohammad [from Mekkeh to El-Medeeneh], (L, Msb,) which his companions, in the time of 'Omar, agreed to make their era, commencing the year from the first appearance of the new moon of [the month] ElMoharram, [two months before the Flight itself,] and making the day to commence from sunset: (Msb:) it is also called تَأْرِيخَ المُسْلِمِينَ the era, or epoch, of the Muslims. (L.) ― -b3- Also The utmost limit, term, or time, of anything: whence the saying, فُلَانٌ تَأْرِيخُ قُوْمِهِ Such a one is the person from whom date the nobility, or eminence, and dominion, or authority, of his people. (Es- Soolee, Mgh, TA.) ― -b4- [Also, A chronicle; a book of annals; a history: pl. تَوَارِيخُ, from تَوْرِيخٌ.]