interradial

[ in-ter-rey-dee-uh l ]

/ ˌɪn tərˈreɪ di əl /

situated between the radii or rays: interradial petals.

Origin of interradial

First recorded in 1865–70; inter- + radial

in·ter·ra·di·al·ly, adverb

These latter are therefore, as their name implies, radial in position; while the basals and orals are interradial.

The Works of Francis Maitland Balfour, Volume II (of 4) |Francis Maitland Balfour
No secondary or interradial ribs are interpolated between the four primary.

Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index |Ernst Haeckel
Three gates of the cortical shell roundish, on the inside with an interradial spine, little broader than the quadrangular arms.

Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, First Part: Porulosa (Spumellaria and Acantharia) |Ernst Haeckel
Cunina (fig. 66) with more than eight tentacles; Cunoctantha with eight tentacles, four perradial, four interradial.

Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 2 |Various

All rings of the disk concentric, of nearly equal breadth, connected by four interradial beams, perpendicular one to another.

Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, First Part: Porulosa (Spumellaria and Acantharia) |Ernst Haeckel

interradial

/ (ˌɪntəˈreɪdɪəl) /

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

interradially, adverb