|1.||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|
|2.||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|
|[C18: from Latin: |
spicule spic·ule (spĭk'yōōl) or spic·u·la (-yə-lə)
n. pl. spic·ules or spic·u·lae (-yə-lē)
A needlelike structure or part.
|spicule (spĭk'yl) Pronunciation Key
a jet of dense gas ejected from the Sun's chromosphere. Spicules occur at the edges of the chromospheric network, where magnetic fields are stronger. They extend up to 10,000 km (6,000 miles) and, although they fall back to the Sun, are thought to contribute to the solar wind by feeding material into the corona
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