Văs'i-fōrm, a.

a. [Lat. vas, vessel, and forma, form.] (Bot.) Having a variety of vascular tissue like that of ducts. Henslow.

Vasiform tissue (Bot.), a kind of tissue composed of tubes, the sides of which are covered with small pits or depressions, producing spots thinner than the rest of the tube, and appearing like minute perforations when viewed by transmitted light;—called also pitted tissue. The tubes themselves are called also dotted ducts. Lindley.