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radial areas on the undersurface of the starfish and similar echinoderms, from which the tube feet are protruded and withdrawn.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 ambulacrum, walk planted with trees, from ambulare, 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”).