pneumatic trough

American  

noun

Chemistry.

1. a trough filled with liquid, especially water, for collecting gases in bell jars or the like by displacement.

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pneumatic trough British  

noun

1. chem a shallow dishlike vessel filled with a liquid, usually water, and used in collecting gases by displacement of liquid from a filled jar held with its open end under the surface of the liquid

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Etymology

Origin of pneumatic trough

First recorded in 1820–30

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Example Sentences

See Examples For:

pneumatic trough

Dr. Paris refers to the case of a chemist of his acquaintance, who was suddenly deprived of sense as he stood over a pneumatic trough in which he was collecting this gas.

From Popular Education For the use of Parents and Teachers, and for Young Persons of Both Sexes by Ira Mayhew

His eyes were gazing with horrible fixity at a pneumatic trough.

From The Alkahest by Katharine Prescott Wormeley

A glass tube brings it into communication with a bell jar full of water on the shelf of the pneumatic trough.

From The Life of the fly; with which are interspersed some chapters of autobiography by Alexander Teixeira de Mattos

I was baffled, exasperated, at my wits' end; all the more that I saw his eye roaming impatiently towards the pneumatic trough where some hydrogen gas was collecting for use.

From Cynthia Wakeham's Money by Anna Katharine Green

He stared, laughed, then walked away to his pneumatic trough.

From Cynthia Wakeham's Money by Anna Katharine Green

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