| 释义 |
polyplacophoran, a. and n. Zool.|ˌpɒlɪpləˈkɒfərən|
[f. mod.L. Polyplacophora, neut. pl. (J. E. Gray, 1821), f. Gr. πολυ-, poly- + πλάξ, πλακο- tablet, plate, etc. + -ϕορος bearing.]
a. adj. Belonging to the division Polyplacophora of isopleurous gastropod molluscs, having a dorsal shell composed of a series of eight plates, as the chitons.
b. n. A mollusc of this division. So polyplacophore |-ˈplækəʊfɔə(r)| a. and n.; ˌpolyplaˈcophorous a.
[1839Penny Cycl. XIV. 322/1 Cyclobranchians (Chismobranchians and Polyplaxiphores).] 1858Mayne Expos. Lex., Polyplacophorous. 1890Cent. Dict., Polyplacophoran..Polyplacophore. 1962D. Nichols Echinoderms xii. 163 It is only fair to mention that other animal groups, such as the polyplacophoran molluscs,..have claimed them. 1973P. Tasch Paleobiol. Invertebr. viii. 329/1 The polyplacophoran shell is composed of aragonite. 1976Nature 2 Sept. 50/1 (caption) A polyplacophoran (Chiton) has removed sediment cover. |