'Interambulacra' definitions:

Definition of 'Interambulacra'

From: GCIDE

Interambulacrum \In`ter*am`bu*la"crum\, n.; pl. L. Interambulacra, E. Interambulacrums. (Zool.) In echinoderms, one of the areas or zones intervening between two ambulacra. See Illust. of Ambulacrum. [1913 Webster]