متوسط

mutawassit̤(act. part. of توسّط 'to be in the middle or midst' (of), etc., v of وسط 'to sit, or to penetrate, into the midst' (of)), adj. Intermediate; midway; in the middle (of); middling; mean; of middling size or proportion; average; neither very good nor very bad; moderate; mediocre, ordinary, common;—intervening, interposing;—s.m. A mediator; an umpire.