twelvemonth

noun

twelve·month ˈtwelv-ˌmən(t)th

: year

Word History

First Known Use

12th century, in the meaning defined above

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The first known use of twelvemonth was in the 12th century

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twelvemo

twelvemonth

twelve-note

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“Twelvemonth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/twelvemonth. Accessed 1 Mar. 2025.

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Kids Definition

twelvemonth

noun

twelve·month -ˌmən(t)th

: year

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twelvemonth

noun

Word History

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