microcapsule

[ mahy-kroh-kap-suh l, -sool, -syool ]
/ ˈmaɪ kroʊˌkæp səl, -sul, -syul /

noun Chemistry.

a tiny capsule, 20–150 microns in diameter, used for slow-release application of drugs, pesticides, flavors, etc.

Origin of microcapsule

First recorded in 1960–65; micro- + capsule