burette

burette
/byoo ret"/, n. Chem.
a graduated glass tube, commonly having a stopcock at the bottom, used for accurately measuring or measuring out small quantities of liquid.
Also, buret.
[1475-85; < F: cruet, burette (OF biurete), equiv. to buire ewer, flagon (perh. < Frankish *burja receptacle, akin to Gmc *bur- hut; see BOWER1) + -ette -ETTE]

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▪ chemical apparatus
also spelled  Buret,  

      laboratory apparatus used in quantitative chemical analysis to measure the volume of a liquid or a gas. It consists of a graduated glass tube with a stopcock (turning plug, or spigot) at one end. On a liquid burette, the stopcock is at the bottom, and the precise volume of the liquid dispensed can be determined by reading the graduations marked on the glass tube at the liquid level before and after dispensing it. In a gas burette, the stopcock is at the top; the tube of the burette is filled with a fluid, such as water, oil, or mercury, and the bottom of the tube is attached to a reservoir of the fluid. Gas is collected by displacing fluid from the burette, and the amount of gas is measured by the volume of fluid displaced.

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Universalium. 2010.

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  • burette — [ byrɛt ] n. f. • buyrete 1305; de buire 1 ♦ Liturg. Flacon destiné à contenir les saintes huiles, ou l eau et le vin de la messe. 2 ♦ Petit flacon à goulot. Burettes d un huilier. ♢ Récipient à tubulure pour verser un liquide goutte à goutte.… …   Encyclopédie Universelle

  • Bürette — (franz., Maßröhre), mit einer Skala versehene Glasröhre, die dazu dient, von einer Flüssigkeit nach und nach bestimmte kleine Mengen auszugießen, und namentlich in der Maßanalyse benutzt wird. 1 Bürette mit Quetschhahn. 2 mit Glashahn. 3… …   Meyers Großes Konversations-Lexikon

  • burette — Burette. s. f. Petite buye. Burette de vin. burette d eau. Il se dit plus particulierement de celles où l on met le vin & l eau pour dire la Messe …   Dictionnaire de l'Académie française

  • burette — 1836, from Fr. burette small vase, dim. of buire vase for liquors, in O.Fr. jug, variant of buie (12c.) bottle, water jog, from Frankish *buk or some similar Germanic source …   Etymology dictionary

  • Burette — Bu*rette , n. [F., can, cruet, dim. of buire flagon.] (Chem.) An apparatus for delivering measured quantities of liquid or for measuring the quantity of liquid or gas received or discharged. It consists essentially of a graduated glass tube,… …   The Collaborative International Dictionary of English

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  • burette — (US also buret) ► NOUN ▪ a graduated glass tube with a tap at one end, for delivering known volumes of a liquid. ORIGIN French, from buire jug …   English terms dictionary

  • burette — or buret [byo͞o ret′] n. [Fr < OFr buirette, dim. of buire, flagon, var. of buie, jug < Frank * buk < IE * bhōu , to swell] a graduated glass tube with a stopcock at the bottom, used as by chemists for measuring small quantities of… …   English World dictionary

  • Burette — Pour les articles homonymes, voir Burette (homonymie). Burette graduée de 50 ml. Une burette est un accessoire de laboratoire permettant d’ajouter au goutte à goutte un …   Wikipédia en Français

  • Burette — Diagram of modern burette A burette (also buret) is a vertical cylindrical piece of laboratory glassware with a volumetric graduation on its full length and a precision tap, or stopcock, on the bottom. It is used to dispense known amounts of a… …   Wikipedia

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