Zool. in echinoderms, that surface area containing a radiating series of perforated plates through which the tube feet extend
Origin of ambulacrumModern Latin from L, tree-lined walk from ambulare: see amble
One of the five radial areas on the undersurface of the starfish and similar echinoderms, from which the tube feet are protruded and withdrawn.
Origin of ambulacrumLatin ambulācrum walk planted with trees from ambulāre to walk ; see ambhi in Indo-European roots.
ventral view of a starfish arm
(plural ambulacrums or ambulacra)
From Latin ambulacrum, from ambulō (“walk; travel”).