Millimicron

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Millimicron \Mil"li*mi`cron\, n. [Milli- + micron.]
     The thousandth part of a micron or the millionth part of a
     millimeter; one nanometer; -- a unit of length sometimes used
     in measuring light waves, etc.
     [Webster 1913 Suppl.]



From WordNet (r) 2.0 [wn]:

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