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单词 tetraclade
释义

tetracladeadj.

/ˈtɛtrəkleɪd/
Etymology: < tetra- comb. form + Greek κλάδος shoot, sprout.
Zoology.
Branching in four; having four arms or rays.
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > class Hexactinellida > [adjective] > relating to order Lithistida > relating to suborder Tetracladina > branching in four
tetraclade1881
1881 P. M. Duncan in Jrnl. Linn. Soc. XV. No. 86. 324 The quadrifid or tetraclade spicula.

Derivatives

tetracladine adj. /tɛtrəˈkleɪdaɪn/ of or pertaining to the Tetraclādina, a suborder of lithistid sponges having spicules branching into four or more processes.
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > class Hexactinellida > [adjective] > relating to order Lithistida > relating to suborder Tetracladina
tetracladine1887
tetracladose1887
1887 W. J. Sollas in Encycl. Brit. XXII. 417/1 [article Sponges] Some or all of the rays of the primitive calthrops..may bifurcate once or twice and finally terminate by subdividing into numerous variously shaped processes; such a tetracladine desma characterizes one division of the Lithistid sponges.
1887 W. J. Sollas in Encycl. Brit. XXII. 422/1 The scleroblast..in the Tetracladine Lithistids lies in an angle between the arms.
tetracladose adj. /tɛtrəˈkleɪdəʊs/ in same sense.
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > class Hexactinellida > [adjective] > relating to order Lithistida > relating to suborder Tetracladina
tetracladine1887
tetracladose1887
1887 W. J. Sollas in Encycl. Brit. XXII. 422/1 A distinct passage can be traced from the Tetracladose to the Rhabdocrepid group.
This entry has not yet been fully updated (first published 1911; most recently modified version published online December 2018).
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adj.1881
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