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WORDNET DICTIONARY
CIDE DICTIONARY
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WORDNET DICTIONARY
Noun Ambulacrum has 1 sense
- ambulacrum(n = noun.animal) - one of the five areas on the undersurface of an echinoderm on which the tube feet are located; is a part of echinoderm
is a kind of body part
Derived form adjective ambulacral1
CIDE DICTIONARY
Ambulacrum, n. [L., an alley or covered way.].
One of the radical zones of echinoderms, along which run the principal nerves, blood vessels, and water tubes. These zones usually bear rows of locomotive suckers or tentacles, which protrude from regular pores. In star fishes they occupy the grooves along the under side of the rays. [1913 Webster]