microcapsule

noun

Etymology: Etymology tree Proto-Indo-European *mey-der.? Ancient Greek μικρός (mikrós)der. English micro- English capsule English microcapsule From micro- + capsule.

1. A very small capsule designed to release its contents when broken (typically, after being swallowed).

   “Similar studies of rats have employed four different intracranial resorbable, slow sustained release systems—surgical foam, a thermal gel depot, a microcapsule or biodegradable polymer beads.”