interradial

American  

[in-ter-rey-dee-uhl] / ˌɪn tərˈreɪ di əl /

adjective

1. situated between the radii or rays.

   interradial petals.

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interradial British  

/ ˌɪntəˈreɪdɪəl /

adjective

1. situated between two radii or rays, esp between the radii of a sea urchin or similar animal

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Other Word Forms

• interradially adverb

Etymology

Origin of interradial

First recorded in 1865–70; inter- + radial

Example Sentences

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

From Project Gutenberg

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.

From Project Gutenberg

T, The five interradial tentacles.

From Project Gutenberg

It has since been proved that the five tentacles with their canals are interradial, so that one can scarcely look on the Pentactula as a primitive stage, while the apparent simplicity of the Synaptidae, at least as compared with other holothurians, is now believed to be the result of regressive 874 changes.

From Project Gutenberg

The genital organs in both Asteroidea and Echinoidea would retain the interradial position they first assumed in Edrioaster; and in Echinoidea their primitive temporary openings to the exterior were converted into definite pores, correlated with five interradially placed plates at the aboral pole.

From Project Gutenberg