twelvemonth

[twelv-muhnth]

Origin of twelvemonth

before 1050; Middle English twelfmoneth. See twelve, month
Related formstwelve·month·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for twelvemonth

twelvemonth

noun
  1. mainly British an archaic or dialect word for year
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