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1. (n.) ambulacrum
one of the radiating surface areas in echinoderms, through which the tube feet protrude during movement.
Etymology: (1830–40; < NL, L: alley, walking place =ambulā(re) to walk (see amble ) +-crum n. suffix denoting means)
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| Definition of 'ambulacrum' |
Princeton's WordNet |
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1. (noun) ambulacrum
one of the five areas on the undersurface of an echinoderm on which the tube feet are located
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| Definition of 'ambulacrum' |
Webster Dictionary |
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1. (noun) ambulacrum
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
2. (noun) ambulacrum
one of the suckers on the feet of mites
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Definitions of ambulacrum 
