Definition of spicule
1 : a slender pointed usually hard body; especially : one of the minute calcareous or siliceous bodies that support the tissue of various invertebrates (such as sponges)
2 : a spikelike short-lived prominence appearing close to the chromosphere of the solar atmosphere
spicularplay \ˈspi-kyə-lər\ adjective
spiculationplay \ˌspi-kyə-ˈlā-shən\ noun
Recent Examples of spicule from the Web
The spicules surge thousands of miles high, passing through the chromosphere and into the sun’s corona before collapsing.
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Origin and Etymology of spicule
New Latin spicula & Latin spiculum; New Latin spicula, alteration of Latin spiculum head of a spear or arrow, diminutive of spicum, spica ear of grain
First Known Use: 1785See Words from the same year
Medical Definition of spicule
: a minute slender pointed usually hard body (as of bone)
Learn More about spicule
Britannica.com: Encyclopedia article about spicule
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