calcareous spicule

известковая игла

English-Russian dictionary of geology. 2011.

Смотреть что такое "calcareous spicule" в других словарях:

  • Spicule — Spic ule, n. [L. spiculum a little point, a dart.] 1. A minute, slender granule, or point. [1913 Webster] 2. (Bot.) Same as {Spicula}. [1913 Webster] 3. (Zo[ o]l.) Any small calcareous or siliceous body found in the tissues of various… …   The Collaborative International Dictionary of English

  • spicule — [spik′yo͞ol΄] n. [< ModL & L: ModL spicula < ML, head of a lance or arrow < L spiculum, dim. of spica, a point, ear, SPIKE2] 1. Astron. any of the short lived, bright, dense gas jets continuously spurting up through the chromosphere of… …   English World dictionary

  • Calcareous sponge — Taxobox name = Calcareous sponges image caption = Calcispongiae from Ernst Haeckel s Kunstformen der Natur , 1904 regnum = Animalia phylum = Porifera classis = Calcarea classis horny = Bowerbank, 1864 subdivision ranks = Orders subdivision =… …   Wikipedia

  • spicule — noun Etymology: 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 Date: 1785 1. a slender pointed usually hard body; especially one of the minute …   New Collegiate Dictionary

  • spicule — /spik yoohl/, n. 1. a small or minute, slender, sharp pointed body or part; a small, needlelike crystal, process, or the like. 2. Zool. one of the small, hard, calcareous or siliceous bodies that serve as the skeletal elements of various marine… …   Universalium

  • spicule — spic•ule [[t]ˈspɪk yul[/t]] n. 1) a small, needlelike crystal, process, or the like 2) frm one of the small, hard, calcareous or siliceous bodies that serve as the skeletal elements of various marine and freshwater invertebrates • Etymology:… …   From formal English to slang

  • spicule — /ˈspɪkjul/ (say spikyoohl), /ˈspaɪkjul/ (say spuykyoohl) noun 1. a small or minute, slender, sharp pointed body or part; a small, needle like crystal, process, or the like. 2. Zoology one of the small, hard, calcareous or siliceous bodies which… …   Australian English dictionary

  • spicule — n. 1 any small sharp pointed body. 2 Zool. a small hard calcareous or siliceous body, esp. in the framework of a sponge. 3 Bot. a small or secondary spike. 4 Astron. a spikelike prominence, esp. one appearing as a jet of gas in the sun s corona.… …   Useful english dictionary

  • Sponge spicule — Sponge spicules Spicules are structural elements found in most sponges. They provide structural support and deter predators. Large spicules, visible to the naked eye are referred to as megascleres, while smaller, microscopic ones are termed… …   Wikipedia

  • Tunicate — Temporal range: Cambrian stage 3–Recent …   Wikipedia

  • Calcium in biology — Calcium (Ca2+) plays a vital role in the anatomy, physiology and biochemistry of organisms and of the cell, particularly in signal transduction pathways. The skeleton acts as a major mineral storage site for the element and releases Ca2+ ions… …   Wikipedia

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