| 单词 | radiole spine |
| 释义 | > as lemmasradiole spine 1. In a sea urchin: each of the large spines which articulate with the primary tubercles. Also radiole spine. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > subphylum Eleutherozoa > class Echinoidea > member of (sea-urchin) > parts of > spine or fossil spine Jew's stone1598 fairy cucumber1708 radiole1873 1873 C. W. Thomson Depths of Sea 103 The radioles have the flatness, the longitudinal striæ, and the serrated edges of those of Porocidaris. 1878 Jrnl. Linn. Soc.: Zool. 13 65 Articulated to the primary tubercles..are two circles of radioles, the inner more slender and shorter, the outer stouter and longer. 1929 Encycl. Brit. VII. 900/2 Primarily radioles serve for protection, but the larger radioles may be used like stilts for locomotion or for digging. 1979 Nature 8 Nov. 135/3 Differing feeding processes in echinoids were correlated with differing fine structure of their radiole spines. 1994 Caribbean Jrnl. Sci. 30 69 Radioles of irregular echinoids are somewhat smaller and much less obvious. < as lemmas |
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