- (US) nanometer
nanometre (plural nanometres)
- An SI subunit of length equal to 10-9 metres. Symbol: nm
2012 January 1, Robert L. Dorit, “Rereading Darwin”, in American Scientist, volume 100, number 1, page 23:
- We live our lives in three dimensions for our threescore and ten allotted years. Yet every branch of contemporary science, from statistics to cosmology, alludes to processes that operate on scales outside of human experience: the millisecond and the nanometer, the eon and the light-year.
subunit of length