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单词 graptolite
释义

WordReference Random House Unabridged Dictionary of American English © 2024
grap•to•lite  (grap′tə līt′),USA pronunciation n. 
  1. Paleontologyany colonial animal of the extinct class Graptolithina, most common in the Ordovician and Silurian Periods, thought to be related to the pterobranchs.
  • Greek graptó(s) painted, marked with letters (verb, verbal adjective, adjectival from gráphein to write) + -lite
  • 1830–40;
grap•to•lit•ic  (grap′tə lit′ik),USA pronunciation adj. 
Collins Concise English Dictionary © HarperCollins Publishers::
graptolite /ˈɡræptəˌlaɪt/ n
  1. any extinct Palaeozoic colonial animal of the class Graptolithina, usually regarded as related to either the hemichordates or the coelenterates: a common fossil, used to determine the age of sedimentary rocks
Etymology: 19th Century: from Greek graptos written, from graphein to write + -lite
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更新时间：2025/7/23 11:12:45