Earth Day

[ urth-dey ]

noun
  1. April 22, a day set aside globally for raising awareness about environmental issues and participating in events to help protect the environment.

Origin of Earth Day

1
First recorded in 1970

Words Nearby Earth Day

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use Earth Day in a sentence

  • In honor of Earth Day, environmentalist Bill McKibben picks his five favorite books about nature and conservation.

    My Favorite Environmental Books | Bill McKibben | April 21, 2010 | THE DAILY BEAST
  • Renata Espinosa highlights the sustainable and chic fashions you will actually want to buy this Earth Day.

    The Earthiest Fashion on Earth | Renata Espinosa | April 22, 2009 | THE DAILY BEAST
  • No water in fountains, water in toilets only during part of an Earth-day.

    The Planet Strappers | Raymond Zinke Gallun
  • A dark shadow blotted out the brightness of the Earth-day for him.

    Slaves of Mercury | Nat Schachner
  • Despite the heavy cloud cover, the afternoon was as bright as an Earth-day.

    Wind | Charles Louis Fontenay
  • The local day would be something more than an Earth-day in length.

    Operation: Outer Space | William Fitzgerald Jenkins