单词 | monactine |
释义 | monactineadj.n. Zoology. rare. A. adj. = monactinal adj. Cf. diactine adj. ΘΚΠ the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having one ray monact1887 monactinal1887 monactine1887 1887 Encycl. Brit. XXII. 416 (Fig. 12) Typical megascleres. a, rhabdus (monaxon diactine); b, stylus (monaxon monactine). 1996 Jrnl. Zool. 238 725 Two new species are described: Dictyonella alonsoi, characterized by thick monactine megascleres which undergo different tip modifications, and Ciocalapata almae. B. n. A monactinal sponge spicule. ΚΠ 1968 P. Brien in M. Florkin & B. T. Scheer Chem. Zool. II. i. 9 When the two monactines unite they form a monaxonal megasclere, pointed at its two ends, known as a diactine, which may be straight or bent. 1991 Canad. Jrnl. Earth Sci. 28 2042 Accessory spicules, including rhizoclones, chiastoclones, and monactines. This entry has been updated (OED Third Edition, September 2002; most recently modified version published online March 2022). < |
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