Submillimeter

adj, noun

adj, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A unit or measurement that is less than a millimeter.

    "The sizes vary from four to five millimeters, or with laminar resolution functional magnetic resonance imaging (lfMRI), to submillimeters."

Adjective
  1. 1
    Less than a millimeter in size. not-comparable

Example

More examples

"The sizes vary from four to five millimeters, or with laminar resolution functional magnetic resonance imaging (lfMRI), to submillimeters."

Etymology

* sub- + millimeter

Related phrases

submillimeter galaxysubmillimeter wave radiation

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.