air bell
noun
1
: a hollow inverted vessel (such as a diving bell or bell jar)
An air bell was used in the construction of one of the new piers for the Baltimore & Ohio R. R. bridge over the Allegheny River at Pittsburgh, Pa.—
Engineering and Contracting, July–December 1922
Engineering and Contracting, July–December 19222
: an air bubble
3
: an undeveloped spot on a negative or print caused by the adherence of an air bubble to the film surface during development
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“Air bell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/air%20bell. Accessed 22 Nov. 2024.
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