ambulacral
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am·bu·lac·rum
(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radial areas on the undersurface of the starfish and similar echinoderms, from which the tube feet are protruded and withdrawn.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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Adj. | 1. | ![]() zoological science, zoology - the branch of biology that studies animals |
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