EUDIOMETER

eudiometer

(noun) measuring instrument consisting of a graduated glass tube for measuring volume changes in chemical reactions between gases

Source: WordNet® 3.1

Etymology

Late 18th century, from Greek: eúdio(s) 'clear, fine', from eu 'well' + dios 'heavenly'

Noun

eudiometer (plural eudiometers)

A graduated glass tube, closed at one end, that is used for measuring the change in the volume of gases during a chemical reaction.

Source: Wiktionary

Eu`di*om"e*ter, n. Etym: [Gr. -meter: cf. F. ediomètre.] (Chem.)

Definition: An instrument for the volumetric measurement of gases; -- so named because frequently used to determine the purity of the air.

Note: It usually consists of a finely graduated and calibrated glass tube, open at one end, the bottom; and having near the top a pair of platinum wires fused in, to allow the passage of an electric spark, as the process involves the explosion and combustion of one of the ingredients to be determined. The operation is conducted in a through of mercury, or sometimes over water. Cf. Burette. Use's ediometer has the tube bent in the form of the letter. U.

Source: Webster’s Unabridged Dictionary 1913 Edition