Earth Day

noun

: a day in April designated for promoting concern for the environment

Word History

First Known Use

1970, in the meaning defined above

Time Traveler
The first known use of Earth Day was in 1970

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Dictionary Entries Near Earth Day

earth current

Earth Day

earthen

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Cite this Entry

“Earth Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Earth%20Day. Accessed 4 Dec. 2023.

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