IPA: //ˈmaɪ.kroʊˌstrʌk.tʃər//
KK: /maɪkroʊˈstrʌkʧər/
The arrangement and organization of small parts within a material or organism that can be seen under a microscope.
Scientists study the microstructure of metals to understand their properties better.
Microstructure → It is formed from "micro-" (from Greek "mikros", meaning small) and "structure" (from Latin "structura", meaning arrangement or building). The word refers to the small-scale arrangement or organization of materials or components within a substance.
Think of 'small' ('micro-') details that make up the 'arrangement' ('structure') of a material — that's what microstructure means.