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Astronomy: General
spicule

spicule

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views updated Jun 27 2018

spicule A small needle or spine, or a small, spiky, skeletal element. In Porifera (sponges), spicules form a skeletal framework supporting the soft, cellular mass. They exist in a variety of forms and are important in the identification and classification of species. An extensive nomenclature has developed through the use of these structures in poriferan taxonomy (e.g. they may be described as monoaxon, tetraxon, triaxon, hexaxon, polyaxon, megasclere, or microsclere). Spicules may be calcareous, siliceous, or of a fibrous material (spongin).

A Dictionary of Zoology MICHAEL ALLABY

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MICHAEL ALLABY "spicule ." A Dictionary of Zoology. . Retrieved November 17, 2024 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/spicule-2

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spicule

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views updated Jun 08 2018

spicule (spik-yool) n. a small splinter of bone.

A Dictionary of Nursing

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spicule

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views updated May 08 2018

spicule A small needle or spine.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

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views updated May 23 2018

spicule A small needle or spine.

A Dictionary of Ecology MICHAEL ALLABY

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spicule

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views updated May 29 2018

spicule A small needle or spine.

A Dictionary of Plant Sciences MICHAEL ALLABY

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MICHAEL ALLABY "spicule ." A Dictionary of Plant Sciences. . Retrieved November 17, 2024 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/spicule-1

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