Ambulacrum Am`bu*la"crum, n.; pl. {Ambulacra}. [L., an alley or covered way.] (Zo["o]l.) (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. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • Ambulācrum — (röm. Ant.), 1) das Spazierengehen, besonders in der bedeckten Porticus, od. in offenen Alleen; daher 2) Allee, ein mit Baumreihen bepflanzter Weg; 3) militärische Übung im Marschiren in voller Rüstung …   Pierer's Universal-Lexikon

  • ambulacrum — [am΄byo͞o lā′krəm, am΄byəlā′krəm] n. pl. ambulacra [am΄byoo lākrə] [ModL < L, tree lined walk < ambulare: see AMBLE] Zool. in echinoderms, that surface area containing a radiating series of perforated plates through which the tube feet… …   English World dictionary

  • Ambulacrum — * An Ambulacrum is an architectural term for the atrium, courtyard, or parvise in front of a Basilica that is surrounded by arcades or colonnades and often contains a fountain is surrounded by trees.It can also refer to any walking path… …   Wikipedia

  • ambulacrum — noun (plural ambulacra) Etymology: New Latin, from Latin, alley, from ambulare to walk more at amble Date: 1837 an ambulacral area or part …   New Collegiate Dictionary

  • ambulacrum — n.; pl. lacra [L. ambulare, to walk] 1. (ARTHROPODA: Chelicerata) The adhesive disc of hooks that terminate the tarsus of ticks. 2. (ARTHROPODA: Insecta) The walking leg. 3. (ECHINODERMATA) Plates with pores forming the test, arranged in 5 or… …   Dictionary of invertebrate zoology

  • ambulacrum — ambulacral, adj. /am byeuh lak reuhm, lay kreuhm/, n., pl. ambulacra / lak reuh, lay kreuh/. one of the radial areas in an echinoderm, as the sea urchin, bearing the tube feet by which the creature moves. [1830 40; < NL, L: alley, walking place,… …   Universalium

  • ambulacrum — noun A row of pores for the protrusion of appendages such as tube feet. See Also: ambulacral …   Wiktionary

  • ambulacrum — [ˌambjʊ leɪkrəm, lakrəm] noun (plural ambulacra leɪkrə, lakrə) Zoology (in an echinoderm) each of the radially arranged bands through which the double rows of tube feet protrude. Derivatives ambulacral adjective Origin C19: L., avenue , from ambu …   English new terms dictionary

  • ambulacrum — am·bu·lac·rum …   English syllables

  • ambulacrum — am•bu•lac•rum [[t]ˌæm byəˈlæk rəm, ˈleɪ krəm[/t]] n. pl. lac•ra [[t] ˈlæk rə, ˈleɪ krə[/t]] ivt one of the radiating surface areas in echinoderms, through which the tube feet protrude during movement • Etymology: 1830–40; < NL, L: alley,… …   From formal English to slang

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