| 释义 |
‖ sphæˈridium Zool.
Pl. -ˈridia. Also -ideum.
[mod.L. (Lovén), f. sphæra sphere n.]
One of the numerous minute rounded bodies attached to certain parts of sea-urchins.
1877Huxley Anat. Inv. Anim. 572 In some genera, these sphæridea..are sunk in fossæ of the plate to which they are attached. 1888Rolleston & Jackson Anim. Life 559 Sphaeridia..occur on the peristome and ambulacra... Structurally they are modified spines, spherical or oval in shape. |