单词 | spicule |
释义 | spicule[ spik-yool ] / ˈspɪk yul / nouna small or minute, slender, sharp-pointed body or part; a small, needlelike crystal, process, or the like. Zoology. one of the small, hard, calcareous or siliceous bodies that serve as the skeletal elements of various marine and freshwater invertebrates. Astronomy. a jet of gas several hundred miles in diameter rising from the sun's surface to heights of 3,000 to 6,000 miles (4,800 to 9,600 km). Origin of spiculeFirst recorded in 1775–85; from Latin spīculum “spearhead, arrowhead, bee stinger,” equivalent to spīc(a) “ear of grain” + -ulum diminutive suffix; see spica, -ule Words nearby spiculespicewood, spick-and-span, spicula, spiculate, spiculation, spicule, spiculum, spicy, spide, spider, spider-burst Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for spicule
British Dictionary definitions for spiculespicule / (ˈspɪkjuːl) / nounAlso called: spiculum a small slender pointed structure or crystal, esp any of the calcareous or siliceous elements of the skeleton of sponges, corals, etc astronomy a spiked ejection of hot gas occurring over 5000 kilometres above the sun's surface (in its atmosphere) and having a diameter of about 1000 kilometres Derived forms of spiculespiculate (ˈspɪkjʊˌleɪt, -lɪt), adjectiveWord Origin for spiculeC18: from Latin: spiculum 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 Medical definitions for spiculespicule [ spĭk′yōōl ] n. pl. spic•ulesA needlelike structure or part. Other words from spiculespic′u•lar (-yə-lər) null adj.The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for spiculespicule [ spĭk′yōōl ] A needlelike structure or part, such as one of the mineral structures supporting the soft tissue of certain invertebrates, especially sponges. Any of numerous short-lived vertical jets of hot gas rising from the solar chromosphere and extending into the corona. Spicules, which only last for about five to ten minutes, are usually several hundred kilometers wide and several thousand kilometers high. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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