n.; pl. -trae [L. fenestra, window]
1. A small opening; a window.
2. An opening through a shell; a foramen.
3. (ARTHROPODA: Insecta)
a. Transparent spots or marks on the wings. b. In Orthoptera, a small membranous area at the base of an antennae of a cockroach. c. In Isoptera, a cavity on the head; a fontanel. d. The membranous base of the ommatidia at the junction with the optic nerve of a compound eye; a transparent ocellate spot in an eye. e. In male Odonata, the genital opening on the ventral surface of abdominal segment 11; see fontanelle.
4. (BRYOZOA: Gymnolaemata)
In Cheilostomata, an open space or mesh in reticulate zoaria.
a. In Secernentea, the thin membranous area surrounding or on either side of the vulva of a cyst forming nematode (Heterodera spp.). b. In some marine Adenophorea, the openings in subcuticular helmets through which sensory nerves pass; fenestrate adj., fenestration n.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • FENESTRA — ex Graeco φαινίςτρα, quod a verbo φανίζω; antiquis Fenestra et Festra, ex Graeco φαίςτρα itidem, quod a φαιςτὸς, perspicuus, lucidus: illuminandae domui inservit. Quo fine decorabantur olim ex speculari lapide, aut vitro in tenues laminas fuso,… …   Hofmann J. Lexicon universale

  • fenestra — (del lat. «fenestra»; ant.) f. *Ventana. * * * fenestra. (Del lat. fenestra). f. desus. ventana …   Enciclopedia Universal

  • Fenestra — (lat.), 1) Fenster; daher Fenestragium, im Mittelalter eine Abgabe für das Recht, durch das Fenster verkaufen zu dürfen. 2) (Anat.), Loch im Ohr; Fenestra rotunda u. Fenestra semiovalis, s.u. Ohr; 3) (Bot.), Samennarbe, s. Hilum …   Pierer's Universal-Lexikon

  • fenestra — FENÉSTRA s.f. (anat.) Deschidere în peretele medial al urechii interne. [< lat. fenestra – fereastră]. Trimis de LauraGellner, 23.03.2005. Sursa: DN …   Dicționar Român

  • fenestra — (Del lat. fenestra). f. desus. ventana …   Diccionario de la lengua española

  • Fenestra — Fe*nes tra, n.; pl. {Fenestr[ae]}. [L., a window.] (Anat.) A small opening; esp., one of the apertures, closed by membranes, between the tympanum and internal ear. [1913 Webster] …   The Collaborative International Dictionary of English

  • Fenestra — (lat., »Fenster«), ein Teil des Ohrs, s. Ohr …   Meyers Großes Konversations-Lexikon

  • fenestra — v. finestra …   Enciclopedia Italiana

  • fenestra — [fi nes′trə] n. pl. fenestrae [fi nes′trē΄] [ModL < L, window, prob. < Etr * fnestra] 1. a small opening, as any of the covered oval openings in the inner wall of the middle ear 2. a small, transparent spot, as in the wings of some insects… …   English World dictionary

  • fenestra — 1. [TA] An anatomic aperture, often closed by a membrane. 2. An opening left in a plaster of Paris cast or other form of fixed dressing in order to permit access to a wound or inspection of the …   Medical dictionary

  • fenestra — n. (in anatomy) an opening resembling a window. The fenestra ovalis (fenestra vestibuli) – the oval window – is the opening between the middle ear and the vestibule of the inner ear. It is closed by a membrane to which the stapes is attached. The …   The new mediacal dictionary

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