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undulatory theory

noun

: wave theory

Word History

First Known Use

circa 1828, in the meaning defined above

Time Traveler
The first known use of undulatory theory was circa 1828

Rhymes for undulatory theory

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undulatory
undulatory theory
undulled
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Cite this Entry

“Undulatory theory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undulatory%20theory. Accessed 30 Nov. 2025.

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Medical Definition

undulatory theory

noun
un·​du·​la·​to·​ry theory ˈən-jə-lə-ˌtōr-ē-, ˈən-d(y)ə-lə-, -ˌtȯr-ē- How to pronounce undulatory theory (audio)
: wave theory
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