مَسِيرٌ
1.
a verbal noun of سَارَ. (S, M, A, &c.)
2.
[Also A place, and a time, of going, or journeying.]
3.
And pass. particle n. of سَارَ; (Msb, MF;) [and so
مَسُورٌ, for] you say طَرِيقٌ مَسُورٌ, (K,) or طَرِيقٌ
مَسُورٌ فِيهِ, (IJ, M,) [A travelled road,] and رَجُلٌ
مَسُورٌ بِهِ [A man made to go, or journey, &c.]: (IJ, M, K:) according to Kh, in this case, and in others like it, the ى is changed into و [so that مَسْيُورٌ, the original form of مَسِيرٌ and of مَسُورٌ, becomes مَسْوُورٌ, and is then contracted into مَسُورٌ]: (M:) or, according to Kh, the ى is rejected: but according to Akh, it is the و that is rejected [so that مَسْيُورٌ becomes مَسْيُرٌ; and then, مَسُيْرٌ; and then مَسُورٌ]. (TA.)