‖ Radiolaria, n. pl. Zool.
(ˌreɪdɪəˈlɛərɪə)
[mod.L. f. radiol-us, dim. of radius n.]
A class of rhizopods (see quot. 1872).
| 1872 Nicholson Palæont. 66 The order Radiolaria is defined as comprising those members of the Rhizopoda which possess a siliceous test or siliceous spicules. 1879 tr. Semper's Anim. Life 74 Most of the Radiolaria..bear in their body certain..particles known as the yellow cells. |