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 (ăm′byə-lăk′rəm, -lā′krəm)
n. pl. am·bu·lac·ra (-lăk′rə, -lā′krə)
One of the five radial areas on the undersurface of the starfish and similar echinoderms, from which the tube feet are protruded and withdrawn.

[Latin ambulācrum, walk planted with trees, from ambulāre, to walk; see ambhi in Indo-European roots.]

am′bu·lac′ral adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.ambulacral - pertaining to the ambulacra of radial echinodermsambulacral - pertaining to the ambulacra of radial echinoderms
zoological science, zoology - the branch of biology that studies animals