equiradial

From equi- +‎ radial.

equiradial (comparative more equiradial, superlative most equiradial)

1. Having equal radii.
   • 1993, Rikki Ducornet, The Jade Cabinet, Dalkey Archive Press, page 57:

     Pythagoras […] had postulated that the universe is made of ten equiradial circles extending from four – at the base – to one – at the top, the whole forming a species of pyramid.