- The definition of a micron is a linear measurement equal to one millionth of a meter.
An example of a micron is the unit of measure represented with the symbol "um."
micron definition by Webster's New World
micron definition by American Heritage Dictionary
also mi·kronnoun pl. mi·crons or mi·cra also mi·krons or mi·kra
Origin: From Greek mīkron, neuter of mīkros, small.
micron - Computer Definition
One micrometer, which is one millionth of a meter or approximately 1/25,000 of an inch. The tiny elements that make up a transistor on a chip are measured in micrometers and nanometers. See process technology.
micron - Medical Definition
or mi·kronnoun pl. mi·crons or mi·cra or mi·krons or mi·kra
micron - Science Definition