| 释义 |
madreporite|mædrɪˈpɔəraɪt|
[f. madrepore + -ite. Cf. G. madreporit, F. madréporite.]
1. Palæont. Fossil madrepore.
1828–32in Webster. 1843W. Humble Dict. Geol., etc., Madreporite. 1. Fossil madrepore.
2. Min. A calcareous rock of columnar structure marked by radiated prismatic concretions.
1802–3tr. Pallas's Trav. (1812) I. 147 Its cells and tubes extend, as is the case with mäandrites, or madreporites, in a parallel line from the surface. 1821Ure Dict. Chem. s.v. Limestone, It [prismatic lucullite] was at one time called madreporite. 1839Penny Cycl. XIV. 271/2 Madreporite.—Anthraconite; Columnar Carbonate of Lime.
3. Zool. The madreporic tubercle in echinoderms.
1877Huxley Anat. Inv. Anim. ix. 554 The madreporic tubercle or madreporite. 1884Sladen in Q. Jrnl. Microscop. Sci. XXIV. 31 The madreporite or water-pore in Asterids usually punctures a basal plate. |