interradiusn.
/ɪntəˈreɪdɪəs/ Zoology.
An interradial space or part, as in an echinoderm; a secondary ray or radiating part lying between two primary rays in some Hydrozoa.
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the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Hydrozoa > parts of
medusoid1848
interradius1870
peronium1880
1870 G. Rolleston Forms Animal Life 142 The Echinodermata..move in locomotion indifferently in the direction of any one radius or inter-radius.
1878 F. J. Bell & E. R. Lankester tr. C. Gegenbaur Elements Compar. Anat. 101 In Cestum..the form of the body has become that of a band, from its having grown in the direction of two similar interradii.
This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022).
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n.1870