Word Study
micromillimeter
WORDNET DICTIONARY
Noun micromillimeter has 1 sense
- micromillimeter(n = noun.quantity) micromillimetre, millimicron, nanometer, nanometre, nm - a metric unit of length equal to one billionth of a meter; Array is a kind of metric linear unit
has parts: a, angstrom, angstrom unit
is a part of micrometer, micron
CIDE DICTIONARY
micromillimeter, n. [Micro- + millimeter.].
The millionth part of a meter.
"The millionth part of a meter is now termed a micron , and the word micromillimeter does not conform to the IS use of the prefix micro- ."
[1913 Webster]
For further exploring for "micromillimeter" in Webster Dictionary Online