microstructure

Noun

 * 1) Fine-scale structure.
 * 2) The fine structure of a material or tissue as revealed by microscopy.
 * 3)  The fine structure of a pure metal or alloy, as revealed by magnifications of 25X or greater.
 * 4)  Fine-scale structure in such variables as temperature, salinity, velocity, etc.

Derived terms

 * microstructural