| 释义 |
‖ corallum|kɒˈræləm|
[L. corallum coral; applied in a special sense.]
A coral; the calcareous skeleton of a coral polypidom; also the horny, suberose, or siliceous tubular envelope of any zoophyte, whether colonial or simple.
1846Dana Zooph. ii. §9 (1848) 15 The corallum in the live Zoophyte is..in general wholly concealed within the polyps. 1855Gosse Marine Zool. I. 18 Hydroida..animals either naked, or inclosed in a horny, tubular envelope (corallum). Ibid. 24 Antennularia. Corallum simple or branched, jointed, with slender hair-like branchlets set in whorls. 1878Huxley Physiogr. xv. 251 The skeleton or corallum..is left as a contribution to the solid floor of the sea. |