decades-long

adjective
de·​cades-long | \ ˈde-ˌkādz-ˌlȯŋ How to pronounce decades-long (audio) \
variants: or less commonly decadeslong

Definition of decades-long

: lasting two or more decades : occurring over a period of two or more decades … no discussion of wolf research would be complete without mention of this fascinating, decades-long study.— Robert R. Ream His decades-long accumulation of books makes an eclectic mix …— Stephen Mihm

First Known Use of decades-long

1930, in the meaning defined above

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The first known use of decades-long was in 1930

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Cite this Entry

“Decades-long.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/decades-long. Accessed 21 Jun. 2021.

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