three-way bulb

noun

Definition of three-way bulb

: an electric light bulb having two filaments of different wattage that can be lighted separately or together to give three levels of illumination

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Cite this Entry

“Three-way bulb.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/three-way%20bulb. Accessed 7 December 2019.

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