First Known Use of microsphere
Medical Definition of microsphere
: a spherical shell that is usually made of a biodegradable or resorbable plastic polymer, that has a very small diameter usually in the micron or nanometer range, and that is often filled with a substance (as a drug or antibody) for release as the shell is degraded
Learn More about microsphere
Britannica.com: Encyclopedia article about microsphere
Seen and Heard
What made you want to look up microsphere? Please tell us where you read or heard it (including the quote, if possible).