AMBULACRA
AMBULACRUM
ambulacrum
(noun) one of the five areas on the undersurface of an echinoderm on which the tube feet are located
Source: WordNet® 3.1
Noun
ambulacra
plural of ambulacrum
Source: Wiktionary
AMBULACRUM
Am`bu*la"crum, n.; pl. Ambulacra. Etym: [L., an alley or covered way.] (Zoöl.) (a) 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. (b) One of the suckers on the feet of mites.
Source: Webster’s Unabridged Dictionary 1913 Edition
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ELOQUENCE
(noun) powerful and effective language; “his eloquence attracted a large congregation”; “fluency in spoken and written English is essential”; “his oily smoothness concealed his guilt from the police”
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