annulation

noun
an·​nu·​la·​tion | \ ˌan-yə-ˈlā-shən How to pronounce annulation (audio) \

Definition of annulation

: a ringlike anatomical structure

First Known Use of annulation

1794, in the meaning defined above

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The first known use of annulation was in 1794

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Cite this Entry

“Annulation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/annulation. Accessed 26 Jan. 2021.

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