تُسْعٌ

A ninth part; one of nine parts; (S, Msb, K,) as also ↓ تُسُعٌ; (Msb;) and ↓ تَسِيعٌ, (S, Msb, K,) agreeably with a rule which some hold to be applicable in the case of every similar fractional number; but Sh says, I have not heard تَسِيعٌ on any authority but that of AZ. (TA.)