I-ū'lus, n.

n. [Lat. iulus, Gr. ἴουλος, down, catkin, centipede.] (Zoöl.) An articulated animal of the class Myriapoda. The body is elongated, of a cylindrical form, and consists of hardened segments, to each of which there are two pairs of feet. When disturbed, it coils itself up into a spiral, with the head and tail turned inwardly. It is common in the warmer parts of both hemispheres.