orbit

/'ɔ:bit/
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orbit

The moon orbits around the Earth.

Definition

  1. Noun:

    • The curved path of a celestial object or spacecraft around a star, planet, or moon: The regular, repeating trajectory an object follows due to gravity.
    • A sphere of activity, influence, or interest: A particular area or range of experience, knowledge, or control.
    • (Anatomy) The bony cavity in the skull that contains the eyeball; the eye socket.

  2. Verb:

    • To move in a curved path around a celestial body: To travel in an orbit.
Examples of Usage

  • Noun:

    • The Earth's orbit around the sun takes one year.
    • The satellite was placed into a stable orbit.
    • As a historian, her research is outside my orbit of expertise.
    • The spacecraft successfully achieved lunar orbit.

  • Verb:

    • The International Space Station orbits the Earth approximately every 90 minutes.
    • How many planets orbit our sun?
Advanced Usage
  • "To be in orbit": To be following a stable path around a celestial body.
    • The Hubble Space Telescope has been in orbit since 1990.
  • "To go into orbit": To achieve orbit; (idiomatically) to become very excited or angry.
    • The rocket will go into orbit in ten minutes.
    • (Idiomatic) My boss went into orbit when he saw the report.
  • "Within one's orbit": Within one's area of influence or knowledge.
    • Managing the budget falls within the director's orbit.
Variants and Related Words
  • Orbital (Adjective): Relating to an orbit.
    • The spacecraft began its orbital insertion maneuver.
  • Orbiter (Noun): A spacecraft designed to orbit a planet or moon without landing.
    • The Mars Reconnaissance Orbiter is a NASA satellite.
Synonyms
  • Noun (Path): Trajectory, path, circuit, revolution.
  • Noun (Sphere): Sphere, domain, realm, scope, ambit, range.
  • Verb: Circle, revolve around, encircle.
Related Phrasal Verbs / Constructions
  • Orbit around: To move in an orbit around something; (figuratively) to have as a central focus.
    • The debate orbited around the issue of funding.
  • Put/Place into orbit: To launch a satellite or spacecraft so that it achieves orbit.
    • The company plans to put a new communications satellite into orbit.
Related Idioms
  • Social/professional orbit: The circle of people one interacts with in social or professional life.
    • He moves in a very powerful professional orbit.
orbit

The moon orbits around the Earth.

Noun
  1. the bony cavity in the skull containing the eyeball
  2. the path of an electron around the nucleus of an atom
  3. an area in which something acts or operates or has power or control: "the range of a supersonic jet"
    • a piano has a greater range than the human voice
    • the ambit of municipal legislation
    • within the compass of this article
    • within the scope of an investigation
    • outside the reach of the law
    • in the political orbit of a world power
  4. a particular environment or walk of life
    • his social sphere is limited
    • it was a closed area of employment
    • he's out of my orbit
  5. the (usually elliptical) path described by one celestial body in its revolution about another
    • he plotted the orbit of the moon
Verb
  1. move in an orbit
    • The moon orbits around the Earth
    • The planets are orbiting the sun
    • electrons orbit the nucleus

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