submillimeter

[suhb-mil-uh-mee-ter]

See more synonyms for submillimeter on Thesaurus.com

adjective

less than a millimeter in size: a submillimeter wave.

Show More

Origin of submillimeter

First recorded in 1950–55; sub- + millimeter

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018