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WORDNET DICTIONARY
CIDE DICTIONARY
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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; 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]