‖n. pl. [ NL., fr. radiatus, p. p. See Radiate. ] (Zool.) An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere. [ 1913 Webster ]
☞ It includes the cœlenterates and the echinoderms. Formerly, the group was supposed to be a natural one, and was considered one of the grand divisions of the animal kingdom. [ 1913 Webster ]
a. [ L. radiatus, p. p. ]
n. (Zool.) One of the Radiata. [ 1913 Webster ]
v. i.
Virtues shine more clear
In them [ kings ], and radiate like the sun at noon. Howell. [ 1913 Webster ]
Light radiates from luminous bodies directly to our eyes. Locke. [ 1913 Webster ]
v. t.
a.
adv. In a radiate manner; with radiation or divergence from a center. [ 1913 Webster ]
a. (Bot.) Having the principal veins radiating, or diverging, from the apex of the petiole; -- said of such leaves as those of the grapevine, most maples, and the castor-oil plant. [ 1913 Webster ]
a. (Bot.) Having the marginal florets enlarged and radiating but not ligulate, as in the capitula or heads of the cornflower. Gray. [ 1913 Webster ]
n. [ L. radiatio: cf. F. radiation. ]