adradialadj.n.

Brit.

/aˈdreɪdɪəl/, U.S.

/æˈdreɪdiəl/

Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: ad- prefix, radial adj.

Etymology: < ad- prefix + radial adj., after German adradial (1869 or earlier in Haeckel).

Zoology.

A. adj.

In radially symmetrical invertebrates such as jellyfishes and echinoderms: relating to or situated near or beside primary rays or axes. Cf. interradial adj., perradial adj.

ΘΚΠ

the world > animals > invertebrates > Radiata > [adjective] > at or on a ray in radiate animals

adradial1879

the world > animals > animal body > general parts > [adjective] > having rays > situated near ray

adradial1879

1879 Jrnl. Royal Microsc. Soc. 2 891 Ctenaria ctenophora..has an ovate umbrella provided on its outer surface (exumbrella) with eight adradial meriodional costæ.

1940 T. J. Parker & W. A. Haswell Text-bk. Zool. (ed. 6) I. 200 Each of the ultimate branches or adradial canals opens into a meridional canal.., which extends upwards and downwards beneath the corresponding swimming-plate.

1968 J. Bouillon in M. Florkin & B. T. Scheer Chem. Zool. II. ii. i. 88 The margin is scalloped into eight lappets or adradial arms or four bifurcated lobes ending in capitate expansions.

2005 Jrnl. Paleontol. 79 1076/2 The species from Algeria has a wide adradial band with two small tubercles.

B. n.

An adradial organ or body part.

ΘΚΠ

the world > animals > invertebrates > Radiata > [noun] > member of > adradial organ

adradial1883

1883 Stud. Biol. Labor. Johns Hopkins Univ. 2 473 The four perradial tentacles and the four interradials are equal and similar, while the eight primary adradials are somewhat smaller.

1906 Bull. U.S. Fish Comm. 1903 23 1084 There are 7 rows of these larger plates; namely, a radial, an adradial, a superomarginal, and an inferomarginal.

1966 Jrnl. Paleontol. 40 1158/1 Spencer classified the plates of Calliasterella mira..as a central surrounded by successive rings of five first radials, five second radials plus five fused adradials, and five third radials plus ten inframarginals.

2001 Biol. Bull. 201 110/2 Radial canals few to many, possibly dependent on age; adradials particularly wide in San Diego medusae.

This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021).

单词	adradial
释义	adradialadj.n. Brit. /aˈdreɪdɪəl/, U.S. /æˈdreɪdiəl/ Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: ad- prefix, radial adj. Etymology: < ad- prefix + radial adj., after German adradial (1869 or earlier in Haeckel). Zoology. A. adj. In radially symmetrical invertebrates such as jellyfishes and echinoderms: relating to or situated near or beside primary rays or axes. Cf. interradial adj., perradial adj. ΘΚΠ the world > animals > invertebrates > Radiata > [adjective] > at or on a ray in radiate animals adradial1879 the world > animals > animal body > general parts > [adjective] > having rays > situated near ray adradial1879 1879 Jrnl. Royal Microsc. Soc. 2 891 Ctenaria ctenophora..has an ovate umbrella provided on its outer surface (exumbrella) with eight adradial meriodional costæ. 1940 T. J. Parker & W. A. Haswell Text-bk. Zool. (ed. 6) I. 200 Each of the ultimate branches or adradial canals opens into a meridional canal.., which extends upwards and downwards beneath the corresponding swimming-plate. 1968 J. Bouillon in M. Florkin & B. T. Scheer Chem. Zool. II. ii. i. 88 The margin is scalloped into eight lappets or adradial arms or four bifurcated lobes ending in capitate expansions. 2005 Jrnl. Paleontol. 79 1076/2 The species from Algeria has a wide adradial band with two small tubercles. B. n. An adradial organ or body part. ΘΚΠ the world > animals > invertebrates > Radiata > [noun] > member of > adradial organ adradial1883 1883 Stud. Biol. Labor. Johns Hopkins Univ. 2 473 The four perradial tentacles and the four interradials are equal and similar, while the eight primary adradials are somewhat smaller. 1906 Bull. U.S. Fish Comm. 1903 23 1084 There are 7 rows of these larger plates; namely, a radial, an adradial, a superomarginal, and an inferomarginal. 1966 Jrnl. Paleontol. 40 1158/1 Spencer classified the plates of Calliasterella mira..as a central surrounded by successive rings of five first radials, five second radials plus five fused adradials, and five third radials plus ten inframarginals. 2001 Biol. Bull. 201 110/2 Radial canals few to many, possibly dependent on age; adradials particularly wide in San Diego medusae. This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021). < adj.n.1879
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