Calcispongiae
Cal`ci*spon"gi*[ae]\, n. pl. [NL., fr. L. calx, calcis, lime + spongia a sponge.] (Zo["o]l.) An order of marine sponges, containing calcareous spicules. See Porifera.| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| the offspring of a zebra and a donkey. |
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