A whiplike locomotory organelle of constant structural arrangement consisting of nine double peripheral microtubules and two single central microtubules; it arises from a deeply staining basal granule, often connected to the nucleus by a fiber, the rhizoplast. Though characteristic of the protozoan class Mastigophora, comparable structures are commonly found in many other groups, e.g., in spermatozoa. [L. dim. of flagrum, a whip]

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fla·gel·lum flə-'jel-əm n, pl -la also -lums a long tapering process that projects singly or in groups from a cell and is the primary organ of motion of many microorganisms

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n. (pl. flagella)
a fine long whiplike thread attached to certain types of cell (e.g. spermatozoa and some unicellular organisms). Flagella are responsible for the movement of the organisms to which they are attached.

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fla·gel·lum (flə-jelґəm) pl. flagelґla [L. “whip”] a long, mobile, whiplike projection from the free surface of a cell, serving as a locomotor organelle. In eukaryotes, it is composed of nine pairs of microtubules arrayed around a central pair. Arising from basal bodies, flagella are common to all mastigophoran protozoa and occur in such specialized cells as spermatozoa. Bacterial flagella are thinner and simpler, being composed of strands of flagellin tightly woven in a helical filament, attached to a basal body in the cell wall. Based on the configuration of their flagella, bacteria are characterized as either monotrichous, lophotrichous, amphitrichous, or peritrichous. See also cilia (def. 3). flagellar adj

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  • FLAGELLUM — lemma Mart. l. 14. Apopn. Epigr. 55. Proficies nibil, hoc caedas licet usqueve flagello, Si tibi purpureo de grege currit equus. Ubi de equis purpureae factionis in Circensibus. Nempe flagellum aurigarum est. Unde Lunae auriganti id adscriptum ad …   Hofmann J. Lexicon universale

  • flagellum — ● flagellum nom masculin Sceptre égyptien caractérisé par trois lanières liées ensemble, figuré dans la main du pharaon et dans celle d Osiris. 1. flagelle [flaʒɛl] ou flagellum [flaʒelɔm; flaʒɛllɔm] n. m. ÉTYM. 1878; lat. flagellum « …   Encyclopédie Universelle

  • flagellum — (n.) 1852, in reference to microbes, from L. flagellum whip, scourge, dim. of flagrum whip, from PIE root *bhlag to strike …   Etymology dictionary

  • Flagellum — Fla*gel lum, n.; pl. E. {Flagellums}, L. {Flagella}. [L., a whip. See {Flagellate}, v. t.] 1. (Bot.) A young, flexible shoot of a plant; esp., the long trailing branch of a vine, or a slender branch in certain mosses. [1913 Webster] 2. (Zo[ o]l.) …   The Collaborative International Dictionary of English

  • flagellum — flagellum. См. жгутик. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Flagellum — (lat.), 1) (röm. Ant.), lederner Riemen, in dessen Ende Blei od. Eisenstücke eingebunden waren; damit wurden Verbrecher gezüchtigt; 2) (Bot., Ausläufer), ein langer fadenförmiger Trieb, der oben aus der Wurzel entspringt u. unter der Erde… …   Pierer's Universal-Lexikon

  • Flagellum — (lat.), Geißel, s. Flimmer; in der Botanik soviel wie Schößling (s.d.) …   Meyers Großes Konversations-Lexikon

  • Flagellum — vgl. Flagelle …   Das Wörterbuch medizinischer Fachausdrücke

  • flagellum — ► NOUN (pl. flagella) Biology ▪ a microscopic whip like appendage which enables many protozoans, bacteria, and spermatozoa to swim. ORIGIN Latin, little whip …   English terms dictionary

  • flagellum — [flə jel′əm] n. pl. flagella [flə jel′ə] or flagellums [L, a whip: see FLAGELLATE] 1. a whip 2. Biol. a whiplike part or process of some cells, esp. of certain bacteria, protozoans, etc., that is an organ of locomotion or produces a current in… …   English World dictionary

  • Flagellum — For the insect anatomical structure, see Antenna (biology). For the flagella of male Solifugae, see Solifugae. Flagella Code TH H1. A flagellum ( …   Wikipedia

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