milliwatt

noun

mil·​li·​watt ˈmi-lə-ˌwät How to pronounce milliwatt (audio)
: one thousandth of a watt

Examples of milliwatt in a Sentence

Recent Examples on the Web
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An onboard electronic control system delivers up to 500 volts to each of those actuators at a power of just 500 milliwatts. Ben Coxworth, New Atlas, 23 Feb. 2025 The company also demonstrated a custom chip that handled an even larger logical qubit, while only occupying a tiny fraction of a square millimeter and consuming just 8 milliwatts of power. John Timmer, Ars Technica, 9 July 2024 Lasers sold for pointing purposes legally can’t exceed 5 milliwatts. Catherine Allen, NBC News, 31 Jan. 2024 Stretchable solar cells exist and are already reaching efficiencies of more than 12 percent, generating about 10 milliwatts per square centimeter outdoors. IEEE Spectrum, 27 May 2021

Word History

Etymology

International Scientific Vocabulary

First Known Use

circa 1914, in the meaning defined above

Time Traveler
The first known use of milliwatt was circa 1914

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Cite this Entry

“Milliwatt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/milliwatt. Accessed 9 Sep. 2025.

Medical Definition

milliwatt

noun
mil·​li·​watt ˈmil-ə-ˌwät How to pronounce milliwatt (audio)
: one thousandth of a watt
abbreviation mW
Last Updated: - Updated example sentences
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