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Definition of "earth" [earth]

  • The land surface of the world. (noun)
  • The softer, friable part of land; soil, especially productive soil. (noun)
  • The third planet from the sun, having a sidereal period of revolution about the sun of 365.26 days at a mean distance of approximately 149 million kilometers (92.96 million miles), an axial rotation period of 23 hours 56.07 minutes, an average radius of 6,378 kilometers (3,963 miles), and a mass of approximately 5.974 × 1024 kilograms (1.317 × 1025 pounds). (noun)
  • The realm of mortal existence; the temporal world. (noun)
  • The human inhabitants of the world: The earth received the news with joy. (noun)
  • The third planet from the sun, the only planet on which life is known to exist. It is not quite spherical, being flattened at the poles, and consists of three geological zones, the core, mantle, and thin outer crust. The surface, covered with large areas of water, is enveloped by an atmosphere principally of nitrogen (78 per cent), oxygen (21 per cent), and some water vapour. The age is estimated at over four thousand million years. Distance from sun: 149.6 million km; equatorial diameter: 12 756 km; mass: 5.976 × 1024 kg; sidereal period of axial rotation: 23 hours 56 minutes 4 seconds; sidereal period of revolution about sun: 365.256 days (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • The inhabitants of this planet (noun)
  • The dry surface of this planet as distinguished from sea or sky; land; ground (noun)
  • The loose soft material that makes up a large part of the surface of the ground and consists of disintegrated rock particles, mould, clay, etc; soil (noun)
  • Worldly or temporal matters as opposed to the concerns of the spirit (noun)
  • The hole in which some species of burrowing animals, esp foxes, live (noun)
  • A connection between an electrical circuit or device and the earth, which is at zero potential (noun)
  • A terminal to which this connection is made (noun)
  • Any of various brown pigments composed chiefly of iron oxides (noun)
  • Of or relating to a group of three signs of the zodiac, Taurus, Virgo, and Capricorn (noun)
  • (of a hunted fox) to go to ground (verb)
  • To connect (a circuit, device, etc) to earth (verb)

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Use "earth" in a sentence
  • "Very strangely to the ears of the bystanders sounded the words of the Bible, accompanying the handful of earth as it was cast upon Púshkin -- "_earth thou art! _""
  • "There ought to be, therefore, a greater escape of electricity from the clouds upwards than downwards; and, if space be void, or only filled with an extremely attenuated matter, the electricity of the earth, considered as an elastic fluid without ponderosity, (and no law of condensation from the law of gravity in harmony with its other attributes, will allow us to consider it otherwise,) _would long since have left the earth_."
  • "'_And God said, let us make man in our image after our likeness, and let them have dominion over the fish of the sea and the fowl of the air and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth_.'"