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extension tube
noun
, Photography.
- any of a series of tubes of varying lengths placed between the lens and a camera body to facilitate closeup focusing.
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Word History and Origins
Origin of extension tube1
First recorded in 1955–60
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Example Sentences
Attachments like pet cleaning heads, crevice tools, and extension tubes or hoses add versatility and help the vacuum work on varied surfaces.
From Popular-Science
Each hole has also an extension tube fitted into it, the whole effect being that of seven blowpipes.
From Project Gutenberg
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