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The Collaborative International Dictionary
Millimicron

Millimicron \Mil"li*mi`cron\, n. [Milli- + micron.] The thousandth part of a micron or the millionth part of a millimeter; -- a unit of length used in measuring light waves, etc.

Wiktionary
millimicron

n. A unit of length equal to one thousandth of a micron

WordNet
millimicron

n. a metric unit of length equal to one billionth of a meter [syn: nanometer, nanometre, nm, micromillimeter, micromillimetre]

Usage examples of "millimicron".

It had to be done millimeter by millimeter, millimicron by millimicron, so that all the necessary structures were properly exposed and accessible for precise alignment.

Something that expanded his brain like a balloon and made him think of nothing else but that it would break into flying pieces at any millimicron of a centon.

Now the time-keeping element of a modern watch is a crystal, machined to better than millimicron tolerance, in a state of permanent resonance.

With a monster alloy-steel press die machined to the millimicron, just like the big boys.

It was composed of waves measuring from 760 millimicrons to 385 millimicrons, and the band itself was labeled with meaningless names: Red, White, Green, Blue.