orbit

American  

[awr-bit] / ˈɔr bɪt /

noun

1. the curved path, usually elliptical, taken by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

2. the usual course of one's life or range of one's activities.

3. the sphere of power or influence, as of a nation or person.

   a small nation in the Russian orbit.

4. Physics. (in theBohr model ) the path traced by an electron revolving around the nucleus of an atom.

5. an orb or sphere.

6. Anatomy.

   1. the bony cavity of the skull that contains the eye; eye socket.

   2. the eye.

7. Zoology. the part surrounding the eye of a bird or insect.

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verb (used with object)

1. to move or travel around in an orbital or elliptical path.

   The earth orbits the sun once every 365.25 days.

2. to send into orbit, as a satellite.

verb (used without object)

1. to go or travel in an orbit.

orbit British  

/ ˈɔːbɪt /

noun

1. astronomy the curved path, usually elliptical, followed by a planet, satellite, comet, etc, in its motion around another celestial body under the influence of gravitation

2. a range or field of action or influence; sphere

   he is out of my orbit

3. Nontechnical name: eye socket.  anatomy the bony cavity containing the eyeball

4. zoology

   1. the skin surrounding the eye of a bird

   2. the hollow in which lies the eye or eyestalk of an insect or other arthropod

5. physics the path of an electron in its motion around the nucleus of an atom

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verb

1. to move around (a body) in a curved path, usually circular or elliptical

2. (tr) to send (a satellite, spacecraft, etc) into orbit

3. (intr) to move in or as if in an orbit

orbit Scientific  

/ ôr′bĭt /

1. The path followed by a celestial body or artificial satellite as it revolves around another body due to the force of gravity. Orbits are nearly elliptical or circular in shape and are very closely approximated by Kepler's laws of planetary motion.

2. One complete revolution of such a body.

3. See Note at solar system

4. A stable quantum state of an electron (or other particle) in motion around an atomic nucleus.

5. See more at orbital

6. Either of two bony hollows in the skull containing the eye and its associated structures.

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1. To move in an orbit around another body.

2. To put into an orbit, as a satellite is put into orbit around the Earth.

orbit Cultural  

1. In astronomy, the path followed by an object revolving around another object, under the influence of gravitation (see satellite). In physics, the path followed by an electron within an atom. The planets follow elliptical orbits around the sun (see ellipse).

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orbit Idioms  

1. see in orbit.

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Discover More

Informally, something is “in orbit” when its actions are controlled by an external agency or force: “The countries of eastern Europe were once in the orbit of the Soviet Union.”

Other Word Forms

• nonorbiting adjective
• orbitary adjective

Etymology

Origin of orbit

1350–1400; Middle English < Latin orbita wheel track, course, circuit

Example Sentences

Instead of looking directly for faint starlight, they searched for tight groupings of globular clusters, which are dense, spherical collections of stars that typically orbit galaxies.

From Science Daily

Their lives intersect, then disentangle, then return to each other’s orbit again.

From Los Angeles Times

The first day of their journey will be spent in orbit around the Earth, then if all systems are working well, the astronauts will head towards the Moon.

From BBC

While none of the three men would be interviewed, Fischer had decades of quotes and conducted his own interviews with hundreds of people in the filmmakers’ orbits to get a fuller and more honest story.

From Los Angeles Times

But this turned into nine months after propulsion problems emerged in orbit and the Starliner spacecraft was deemed unfit to fly them back.

From Barron's

Related Words

• path
• pattern
• rotation
• trajectory