madreporite


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mad·re·por·ite

 (măd′rə-pôr′īt)
n.
A perforated platelike structure in most echinoderms that forms the intake for their water-vascular systems.

[So called because the perforations resemble those of a madrepore.]

madreporite

(ˈmædrɪˌpɔːraɪt)
n
(Biology) the opening which allows water to filter into the water vascular system of echinoderms

mad•re•por•ite

(ˈmæd rəˌpɔr aɪt, -ˌpoʊr-, məˈdrɛp əˌraɪt)

n.
a sievelike plate in certain echinoderms through which water passes into the vascular system.
[1875–80]
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References in periodicals archive ?
The water vascular system of this species is comprised of a circular canal as well as 5 radial canals, canals to the ambulacra, oral tentacles with their ampullae, a stone canal, and a madreporite (Fig.
Its principal goal is to constitute the applied catalogue of GFP-like proteins obtained from various non-bio-luminescent species--soft and madreporite corals, comb-jellies, actiniae etc.