micron (Science: physics) A measure of length; the thousandth part of one millimetre; the millionth part of a meter. Origin: NL, fr. Gr. Small. A metric unit of length equal to one millionth of a meter.See micrometre.
The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tutorial will be more or less a quick review of the various principles of water motion in reference to plants. ..