interradial Zool.
(ɪntəˈreɪdɪəl)
[inter- 4 a.]
a. adj. Situated between radii or rays, as in an echinoderm. b. n. An interradial part.
| 1870 Rolleston Anim. Life 143 In the inter-radial space..is seen the madreporic tubercle. Ibid. 226 One of the interradial septa. 1877 W. Thomson Voy. Challenger II. ii. 95 The excretory opening is on a small interradial papilla. |
Hence inteˈrradially adv.
| 1870 Rolleston Anim. Life 224 One of the interradially-placed circumoral plates. 1888 Rolleston & Jackson Anim. Life 190 Five sets of spines..project over this area interradially. |