مَاْءٌ مَأْمُوتٌ

A water of which the distance is computed, or conjectured. (TA.)

هُوَ إِلَى أَجَلٍ مَاْمُوتٍ It is until a determined, defined, or definite, period. (S, K. *)

شَىْءٌ مَأْمُوتٌ A thing that is known. (M, TA.) [And so مَوْمُوتٌ.]