rachis


rachis
rachidian /reuh kid"ee euhn/, rachial /ray"kee euhl/, rachidial, adj.
/ray"kis/, n., pl. rachises, rachides /rak"i deez', ray"ki-/.
1. Bot.
a. the axis of an inflorescence when somewhat elongated, as in a raceme.
b. (in a pinnately compound leaf or frond) the prolongation of the petiole along which the leaflets are disposed.
c. any of various axial structures.
2. Ornith. the part of the shaft of a feather bearing the web. See illus. under feather.
3. Anat. See spinal column.
Also, rhachis.
[1775-85; < NL < Gk rháchis spine, ridge, backbone]

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Universalium. 2010.

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  • rachis — [ raʃis ] n. m. • 1575; gr. rhakhis 1 ♦ Anat. Colonne vertébrale, épine dorsale. ⇒ 1. échine. 2 ♦ Sc. nat. Axe d une plume d oiseau. Axe central d un épi. ● rachis nom masculin (grec rhakhis) Synonyme de colonne vertébrale. Axe d une plume d… …   Encyclopédie Universelle

  • Rachis — is also the alternate spelling of Ratchis, king of the Lombards, 744 749. The rachis (pronEng|ˈreɪkɪs) is the main axis of the inflorescence, or spike, of wheat and other cereals, to which the spikelets are attached. It is also the part of the… …   Wikipedia

  • Rachis — Saltar a navegación, búsqueda Rachis o Raqui fue duque de Friuli (739 744) y rey de los Lombardos (744 749). Su padre fue Pemmo de Friuli. Se casó con Tassia, una romana. Reinó en paz hasta que sitió, por razones desconocidas, la ciudad de… …   Wikipedia Español

  • Rachis — (Ratchis) (7. Juni), König der Longobarden, welcher den Purpurmantel mit dem Mönchsgewande vertauschte, steht bei Bucelin als »Seliger«. Er bestieg nach dem Jahre 744 für seinen Bruder Luitprand den Königsthron. Als er i. J. 749 Perugia belagerte …   Vollständiges Heiligen-Lexikon

  • Rachis — Ra chis (r[=a] k[i^]s), n.; pl. E. {Rachises} (r[=a] k[i^]s*[e^]z), L. {Rachides} (r[a^]k [i^]*d[=e]z). [NL., fr. Gr. ra chis, ios.] [Written also {rhachis}.] 1. (Anat.) The spine; the vertebral column. [1913 Webster] 2. (Bot. & Zo[ o]l.) Same as …   The Collaborative International Dictionary of English

  • Rachis [1] — Rachis (Bot.), Hauptstiel …   Pierer's Universal-Lexikon

  • Rachis [2] — Rachis, Sohn des Pemmo, 737–744 Herzog von Friaul, dann König der Longobarden …   Pierer's Universal-Lexikon

  • RACHIS — foro Iulii Dux, fil. Remnonis, in locum Aldebrandi seu Hildebrandi, quem vide, nepotis Luitprandi, Longobardorum Rex electus, A. C. 744. Perusium obsedit, A. C. 750. precibus Zachariae Pontificis inde aversus. Postea in gratiam Aistulphi fratris… …   Hofmann J. Lexicon universale

  • rachis — [rā′kis] n. pl. rachises or rachides [rak′ə dēz΄, rā′kədēz΄] [ModL < Gr rhachis, backbone < IE base * wrāĝh , thorn, point > Lith rãžas, stubble] 1. SPINAL COLUMN 2. Bot. the principal axis of an inflorescence or of a compound leaf 3.… …   English World dictionary

  • Rachis — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Sur les autres projets Wikimedia : « Rachis », sur le Wiktionnaire (dictionnaire universel) Le mot rachis peut renvoyer à : Rachis,… …   Wikipédia en Français

  • rachis — noun (plural rachises; also rachides) Etymology: New Latin rachid , rachis, from Greek rhachis; akin to Greek rhachos thorn, Lithuanian ražas dry twig, tine Date: 1785 1. an axial structure: as a. (1) the elongated axis of an inflorescence (2) an …   New Collegiate Dictionary


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