Advertisement

Advertisement

spicule

[ spik-yool ]

noun

  1. a small or minute, slender, sharp-pointed body or part; a small, needlelike crystal, process, or the like.
  2. Zoology. one of the small, hard, calcareous or siliceous bodies that serve as the skeletal elements of various marine and freshwater invertebrates.
  3. 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).


spicule

/ ˈspɪkjuːl; -lɪt; ˈspɪkjʊˌleɪt /

noun

  1. Also calledspiculum 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
“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

spicule

/ spĭkyo̅o̅l /

  1. A needlelike structure or part, such as one of the mineral structures supporting the soft tissue of certain invertebrates, especially sponges.
  2. 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.
Discover More

Derived Forms

  • spiculate, adjective
Discover More

Word History and Origins

Origin of spicule1

First recorded in 1775–85; from Latin spīculum “spearhead, arrowhead, bee stinger,” equivalent to spīc(a) “ear of grain” + -ulum diminutive suffix; spica, -ule
Discover More

Word History and Origins

Origin of spicule1

C18: from Latin: spiculum
Discover More

Example Sentences

Among and between the animals are interwoven trails of spicules, skeleton-like structures shed by the sponges.

Instead the scientists believe that the sponges stick their spicules into the ground and then slowly pull their bodies forward.

From Salon

Another possibility is that the sponges move to disperse their offspring, or that they build spicule trails to provide sponge larvae with surfaces to settle on.

He saw spicules of coalesced matter — “radiobes,” as he called them — that resembled, to his eyes, the most primeval forms of life.

She expects “to see what they call deep-sea ‘coral gardens,’” which include spindly bamboo corals and glass sponges, which have glasslike structural spicules made of silica.

Advertisement

Advertisement

Advertisement

Advertisement


spiculationspiculum