the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [adjective] > belonging to or resembling echinoderms > of parts of > having five rays > situated between rays (2)
adj. Situated between radii or rays, as in an echinoderm.
Situated between the ‘arms’ or rays of an echinoderm: = interambulacral adj., interradial, adj. Also as n. An interbrachial part or member.