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interradial

[ in-ter-rey-dee-uhl ]

adjective

  1. situated between the radii or rays:

    interradial petals.



interradial

/ ˌɪntəˈreɪdɪəl /

adjective

  1. situated between two radii or rays, esp between the radii of a sea urchin or similar animal
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Derived Forms

  • ˌinterˈradially, adverb
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Other Words From

  • inter·radi·al·ly adverb
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Word History and Origins

Origin of interradial1

First recorded in 1865–70; inter- + radial
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Example Sentences

Interrā′dius, an interradial part, esp. of a hydrozoan.

Each plate of the upper circlet supports an arm, and is called a “radial”; the plates of the lower circlet, the “basals,” rest on the stem and alternate with those of the upper circlet, i.e. are interradial in position.

Sub-class I. Monocyclica.—Crinoidea in which the base consists of BB only, the aboral prolongations of the chambered organ being interradial; new columnals are introduced at the extreme proximal end of the stem.

Division B. Eublastoidea.—Blastoidea in which the thecal plates have assumed a definite number and position in 3 circlets, as follows: 3 basals, 2 large and 1 small; 5 radials, often fork-shaped, forming a closed circlet; 5 deltoids, interradial in position, supported on the shoulders or processes of the radials, and often surrounding the peristome with their oral ends.

T, The five interradial tentacles.

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interracialisminterrecord gap