Earth

usgb/ɜːrθ/
noun

The planet we live on, third from the sun.

The earth rotates on its axis once every 24 hours.
Visual representation of "earth" - The planet we live on, third from the sun.

Often appears as...

  • save the earth
  • down to earth
Definition 1 of 6
Visual representation of "earth"
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Astronomical Object

Used to refer specifically to the planet we inhabit, not just any planet.

Illustration for Astronomical Object
Scientists search space for conditions like those on earth.
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Not Always Literal

Can be used figuratively to mean the human world or all of nature.

Illustration for Not Always Literal
We must protect the earth for future generations.
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Capitalization Varies

Capitalized as 'Earth' when specifically discussing the planet, lowercase otherwise.

Illustration for Capitalization Varies
Astronauts saw Earth from space.
Visual representation of the word "Earth"

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