spicule
[ spik-yool ]
/ ˈspɪk yul /
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noun
a 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).
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Words nearby spicule
spicewood, spick-and-span, spicula, spiculate, spiculation, spicule, spiculum, spicy, spide, spider, spider-burst
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for spicule
British Dictionary definitions for spicule
spicule
/ (ˈspɪkjuːl) /
noun
Also 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 spicule
spiculate (ˈspɪkjʊˌleɪt, -lɪt), adjectiveWord Origin for spicule
C18: 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 spicule
spicule
[ spĭk′yōōl ]
n. pl. spic•ules
A needlelike structure or part.
Other words from spicule
spic′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 spicule
spicule
[ 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.