adjective
- smaller than one millimeter in size or measurement
Usage: technical; scientific
Examples
- The submillimeter particles were too small to see without a microscope.
- Scientists used submillimeter wavelength radiation to study distant galaxies.
- The device can measure submillimeter movements with high precision.
- Submillimeter astronomy reveals details invisible to optical telescopes.
- The crack was only submillimeter in width but still caused structural problems.
- Researchers developed submillimeter-scale sensors for medical applications.