Tō'men-tōse' or To-mĕn'toŭs, a.

a. [Fr. tomenteux, It. & Sp. tomentoso, from Lat. tomentum, a stuffing of wool, hair, or feathers.] (Bot.) Covered with hairs so close as scarcely to be discernible, or with a whitish down, like wool; downy; nappy; as, a tomentous stem or leaf.