micrometeorite

n : a meteorite so small that it drifts down to earth without

becoming intensely heated in the atmosphere

micrometre

(Or "micron") One millionth of a {metre}. The symbol

is a Greek letter {mu} followed by "m".

Features on modern {integrated circuits} are typically

measured in microns. The smallest features in 1999 are around

0.1 microns across.

(1999-09-28)