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submillimeter

[ suhb-mil-uh-mee-ter ]

adjective

  1. less than a millimeter in size:

    a submillimeter wave.

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Word History and Origins

Origin of submillimeter1

First recorded in 1950–55; sub- + millimeter

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Example Sentences

The image above was constructed with longer-wavelength light, using the Atacama Large Millimeter/submillimeter Array (ALMA).

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submicroscopicsubminiature

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