Definition of adradius in English:

adradius

noun

Zoology
rare
  • In an invertebrate with radial symmetry, as a cnidarian or an echinoderm: any of the tertiary (third order) rays or axes (each located between a perradius and an interradius).

Origin

1960s; earliest use found in The Biological Bulletin. From ad- + radius.

Pronunciation:

adradius

/aˈdreɪdɪəs/