单词 | belemnite |
释义 | belemnite[ bel-uhm-nahyt ] / ˈbɛl əmˌnaɪt / noun Paleontology.a conical fossil, several inches long, consisting of the internal calcareous rod of an extinct animal allied to the cuttlefish; a thunderstone. Origin of belemnite1640–50; <French bélemnite, equivalent to Greek bélemn(on) a dart (noun derivative from base of bállein to throw) + French -ite-ite1 Words nearby belemnitebeld, beldam, beleaguer, belection, Belém, belemnite, belemnoid, bel-esprit, Belfast, Belfort, belfry Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for belemniteBritish Dictionary definitions for belemnitebelemnite / (ˈbɛləmˌnaɪt) / nounany extinct marine cephalopod mollusc of the order Belemnoidea, related to the cuttlefish the long pointed conical internal shell of any of these animals: a common Mesozoic fossil Word Origin for belemniteC17: from Greek belemnon dart Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for belemnitebelemnite [ bĕl′əm-nīt′ ] Any of various extinct cephalopod mollusks of the order Belemnoidea that lived from the Triassic into the Tertiary Period. Belemnites had a large, cone-shaped internal shell with a complex structure that served as a support for muscles and as a hydrostatic device. Belemnites were closely related to the present-day squids and cuttlefishes. The fossilized internal shell of one of these cephalopods. Belemnites are used as index fossils. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
随便看 |
|
英语词典包含192737条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。