- situated between the radii or rays: interradial petals.
Origin of interradial
Examples from the Web for interradial
Historical Examples of interradial
All rings of the disk concentric, of nearly equal breadth, connected by four interradial beams, perpendicular one to another.
Three gates of the cortical shell roundish, on the inside with an interradial spine, little broader than the quadrangular arms.
Between the latter four interradial beams arise from the sides in pairs, and the two pairs are connected by a diagonal arch.
No secondary or interradial ribs are interpolated between the four primary.
Lower ring octagonal, with eight peripheral adradial spines, and with four interradial centripetal teeth on the inside.
- situated between two radii or rays, esp between the radii of a sea urchin or similar animal