- a graduated glass tube, commonly having a stopcock at the bottom, used for accurately measuring or measuring out small quantities of liquid.
- a graduated glass tube with a stopcock on one end for dispensing and transferring known volumes of fluids, esp liquids
1836, from French burette “small vase, cruet,” diminutive of buire “vase for liquors,” in Old French “jug,” variant of buie (12c.) “bottle, water jog,” from Frankish *buk- or some similar Germanic source (see (n.)). As a laboratory measuring tube, from 1836.
- A uniform-bore tube with fine gradations and a stopcock at the bottom, used especially in laboratory procedures for accurate fluid dispensing and measurement.
- A graduated glass tube having a tapered bottom with a valve. It is used especially in laboratories to pour a measured amount of liquid from one container into another.