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


Etymology

Noun

ambulacrum (plural ambulacrums or ambulacra)

(of an echinoderm) A row of pores for the protrusion of appendages such as tube feet.

Source: Wiktionary


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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Word of the Day

13 March 2025

ACCURATE

(adjective) conforming exactly or almost exactly to fact or to a standard or performing with total accuracy; “an accurate reproduction”; “the accounting was accurate”; “accurate measurements”; “an accurate scale”


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Coffee Trivia

In the 18th century, the Swedish government made coffee and its paraphernalia (including cups and dishes) illegal for its supposed ties to rebellious sentiment.

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