radiolen.

Brit.

/ˈreɪdɪəʊl/, U.S.

/ˈreɪdiˌoʊl/

Origin: A borrowing from Latin. Etymon: Latin radiolus.

Etymology: < post-classical Latin radiolus spine of a fossil echinoid (beginning of the 18th cent. or earlier) < classical Latin radius radius n. + -olus -ole suffix¹.The Latin noun is attested in the 4th cent. in sense ‘faint ray of the sun’, and in classical Latin denoting a kind of long olive.

Zoology.

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.

2. In a fan worm or other tentaculate marine worm: each of the main branches or filaments in the branchial crown.

ΚΠ

1954 Systematic Zool. 3 184/2 The anterior end [in Pogonophora] is provided with a tentacular crown which consists of one or more filaments or paired radioles provided with paired pinnules.

1977 Biol. Bull. 153 113 The crown [in a small sabellid] consists of a distinct right and left unit, each consisting of three radioles bearing seven or eight pairs of long lateral filaments, or pinnules.

2004 Zoology 107 263/2 This [cartilaginous] tissue begins at the base of the tentacles and extends into each of the branches, or radioles, of the feeding tentacles.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	radiole
释义	radiolen. Brit. /ˈreɪdɪəʊl/, U.S. /ˈreɪdiˌoʊl/ Origin: A borrowing from Latin. Etymon: Latin radiolus. Etymology: < post-classical Latin radiolus spine of a fossil echinoid (beginning of the 18th cent. or earlier) < classical Latin radius radius n. + -olus -ole suffix¹.The Latin noun is attested in the 4th cent. in sense ‘faint ray of the sun’, and in classical Latin denoting a kind of long olive. Zoology. 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. 2. In a fan worm or other tentaculate marine worm: each of the main branches or filaments in the branchial crown. ΚΠ 1954 Systematic Zool. 3 184/2 The anterior end [in Pogonophora] is provided with a tentacular crown which consists of one or more filaments or paired radioles provided with paired pinnules. 1977 Biol. Bull. 153 113 The crown [in a small sabellid] consists of a distinct right and left unit, each consisting of three radioles bearing seven or eight pairs of long lateral filaments, or pinnules. 2004 Zoology 107 263/2 This [cartilaginous] tissue begins at the base of the tentacles and extends into each of the branches, or radioles, of the feeding tentacles. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.1873
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