Medical Device
microsphere Audio
mi·cro·sphere [ my-kroh-sfeer ]
Definitions related to microspheres:
  • A very tiny, hollow, round particle made from glass, ceramic, plastic, or other materials. Microspheres injected into blood vessels that feed a tumor may kill the tumor by blocking its blood supply. They can also be filled with a substance that may help kill more tumor cells.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • Small uniformly-sized spherical particles, of micrometer dimensions, frequently labeled with radioisotopes or various reagents acting as tags or markers.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
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