crystalline cone

crystalline cone
: a transparent conical refractive body that functions as a lens in each ommatidium of the compound eye of many arthropods

Useful english dictionary. 2012.

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  • crystalline cone — (ARTHROPODA: Insecta) The hard, clear intracellular structure of the eucone eye, produced by Semper cells beneath the cornea and bordered laterally by the primary pigment cells; also known as vitreous body or crystalline body; see acone eye,… …   Dictionary of invertebrate zoology

  • cone — (Roget s IV) n. 1. [A conical object] Syn. conoid, cone shaped area, conoidal area, conoidal surface, funnel, cornet, strobiloid. Types of cones include: circular, right circular, chief, stepped, supplemental, oblique, retinal, endostylic,… …   English dictionary for students

  • crystalline body — see crystalline cone …   Dictionary of invertebrate zoology

  • cone cell — (ARTHROPODA: Insecta) One of the four cells that produce the crystalline cone …   Dictionary of invertebrate zoology

  • Cone-in-cone structures — in limestone. Cone in cone structures are secondary sedimentary structures that form in association with deeper burial and diagenesis. They consist of concentric inter bedded cones of calcite or more rarely gypsum, siderite or pyrite …   Wikipedia

  • cone — n. [L. conus, cone] 1. Any cone shaped structure. 2. The conical crystalline body of a compound eye, not always solid crystalline and occasionally not conical; see crystalline. 3. (ARTHROPODA: Insecta) The head shape of a thrip. 4. (NEMATODA:… …   Dictionary of invertebrate zoology

  • Pseudo-cone — Pseu do cone , n. [Pseudo + cone.] (Zo[ o]l.) One of the soft gelatinous cones found in the compound eyes of certain insects, taking the place of the crystalline cones of others. [1913 Webster] …   The Collaborative International Dictionary of English

  • photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such …   Universalium

  • Eye — For other uses, see Eye (disambiguation), Ocular (disambiguation), Ocular, and Oculus. For taxon specific articles, see human eye, simple eye in invertebrates, mollusc eye, and arthropod eye. Eye …   Wikipedia

  • pseudocone — adj. [Gr. pseudos, false; konas, cone] (ARTHROPODA: Insecta) In certain Diptera and Odonata, a condition where the cone of the ommatidium is liquid filled or gelatinous rather than a crystalline cone (eucone condition) …   Dictionary of invertebrate zoology

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