n. [ NL., fr. Gr.
a. [ From Micronesia, fr. Gr.
n. pl.;
n. [ Micro- + chronometer. ] An instrument for noting minute portions of time. [ 1913 Webster ]
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. ]
n.