watch-glass
Britishnoun
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a curved glass disc that covers the dial of a watch
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a similarly shaped piece of glass used in laboratories for evaporating small samples of a solution, etc
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Indeed, the dust here is almost worse than in Pekin, where the natives say that it will work its way through a watch-glass, no exaggeration, as I can, from personal experience, testify.
From From Paris to New York by Land by Harry De Windt
The slips now are put into alcohol for a few minutes, are dried in the same manner as from the ether, and are kept ready for use in a dust-tight watch-glass.
From Histology of the Blood Normal and Pathological by W. Myers
Hollowed out; the inner surface of a watch-glass is concave, and may represent the form of a concave mirror, or lens.
From Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained by Thomas P. Jones
To preserve Hydra in an expanded condition.—Place the polyp in a watch-glass of clean water and wait until its tentacles are expanded.
From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale
The gun-cotton is then removed from the filter and transferred to a watch-glass, and dried in the water oven at 100° C. When dry it is exposed to the air for two hours and weighed.
From Nitro-Explosives: A Practical Treatise by P. Gerald (Percy Gerald) Sanford
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
