Dictionary
microsphere
noun mi·cro·sphere \ˈmī-krə-ˌsfir\
Definition of MICROSPHERE
: a minute sphere
— mi·cro·spher·i·cal \ˌmī-krə-ˈsfir-i-kəl, -ˈsfer-\ adjective
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First Known Use of MICROSPHERE
1894
Medical Dictionary
microsphere
noun mi·cro·sphere \-ˌsfir\
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
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