Definition of microsphere
: a minute sphere
microsphericalplay \ˌmī-krə-ˈsfir-i-kəl, -ˈsfer-\ adjective
Recent Examples of microsphere from the Web
The top layer has scattered glass microspheres that are infrared radiant.
The same star as seen through a microsphere (right).
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'microsphere'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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
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