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 invertebrate animals, especially in sponges and in most Alcyonaria. [1913 Webster]

Note: Spicules vary exceedingly in size and shape, and some of those found in siliceous sponges are very complex in structure and elegant in form. They are of great use in classification. [1913 Webster]

Description of the Illustration: [1913 Webster]

a Acerate; b Tricurvate, or Bowshaped; c d Hamate; e Broomshaped; f Scepterellate; g Spinispirulate; h Inequi-anchorate; i Sexradiate; j A Trichite Sheaf; k Six-rayed Capitate; l Rosette of Esperia; m Equi-anchorate. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • spicule — [ spikyl ] n. m. • 1830; lat. spiculum « dard » 1 ♦ Sc. nat. Structure animale, végétale ou minérale, en forme d épi ou de dard. Spécialt Chacun des petits bâtonnets calcaires ou siliceux constituant le squelette des éponges. 2 ♦ (1959) Astron.… …   Encyclopédie Universelle

  • spiculé — spiculé, ée (spi ku lé, lée) adj. Terme de botanique. Se dit de l épi composé de plusieurs épillets sessiles ou subsessiles serrés contre le rachis, par exemple l ivraie. ÉTYMOLOGIE    Spicule …   Dictionnaire de la Langue Française d'Émile Littré

  • spicule — 1785, from Fr. spicule, from dim. of L. spica (see SPIKE (Cf. spike) (n.1)) …   Etymology dictionary

  • 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

  • Spicule — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Spicule signifie : élément ayant la forme d’une aiguille. Le sens diffère en fonction des circonstances : Spicule : en astronomie, un jet… …   Wikipédia en Français

  • Spicule — This article is about the skeletal structure. See also Spicule (solar physics) and Spicule (glass manufacture). Spicules are tiny spike like structures of diverse origin and function found in many organisms, such as the copulatory spicules of… …   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 — minute, hard, needle like or sharp pointed processes or projections …   Dictionary of ichthyology

  • spicule — n. [L. spicula, small spike] 1. Any minute pointed spine or process. 2. (MOLLUSCA: Polyplacorphora) The dorsal girdle decorations of various size, shape and frequency. 3. (NEMATA) Blade like, sclerotized male copulatory organs, usually paired,… …   Dictionary of invertebrate zoology

  • 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

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