mi·​cro·​sphere | \ ˈmī-krə-ˌsfir How to pronounce microsphere (audio) \

Definition of microsphere

: a minute sphere

Other Words from microsphere

microspherical \ ˌmī-​krə-​ˈsfir-​i-​kəl How to pronounce microsphere (audio) , -​ˈsfer-​ \ adjective

Examples of microsphere in a Sentence

Recent Examples on the Web The microsphere activate on contact, releasing extracts on the skin through friction to help replenish lost moisture and keep it there longer. Leada Gore | Lgore@al.com, al, 23 Sep. 2020 Expandable graphite’s disruptive effect is triggered at a slightly higher temperature (160°C) than the 125°-150°C which causes the microspheres to inflate. The Economist, 28 May 2020 Without the microspheres, the flat, white brushstrokes would be imperceptible. Los Angeles Times, 5 Aug. 2019 These clusters of specially coated microspheres dissipate energy by roping nearby spheres into forming identical clusters. Quanta Magazine, 22 Jan. 2014 The catalyst for this rapid process is known are polystyrene microspheres, tiny particles which contain styrene and have a wide range of applications throughout the sciences. David Grossman, Popular Mechanics, 15 Aug. 2018 Available for purchase online, polystyrene microspheres can absorb proteins, be loaded with compounds, and perform any number of scientific tasks. David Grossman, Popular Mechanics, 15 Aug. 2018 Photo: Mary Corse, Untitled (Yellow, Black, White, Beveled), 2010, Glass microspheres in acrylic on canvas, 12 x 108 inches; Carolyn Drake for WSJ. Ted Loos, WSJ, 1 May 2018 Zilretta, which received Food and Drug Administration approval in October, treats pain as a corticosteroid is gradually released from tiny globes known as microspheres. Brian Gormley, WSJ, 25 May 2018

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.

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First Known Use of microsphere

1894, in the meaning defined above

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The first known use of microsphere was in 1894

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Cite this Entry

“Microsphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microsphere. Accessed 28 Jan. 2022.

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More Definitions for microsphere


mi·​cro·​sphere | \ -ˌsfir How to pronounce microsphere (audio) \

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

More from Merriam-Webster on microsphere

Britannica.com: Encyclopedia article about microsphere


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