Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See center of mass.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The center of a mass; often specifically, the point at which the gravitational forces exerted by two objects are equal
  • n. The centroid, the geometric center of a plane figure

from the GNU version of the Collaborative International Dictionary of English

  • n. the point representing the mean position of the matter in a body.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (astronomy) the common center of mass around which two or more bodies revolve

Etymologies

Greek barus, heavy; see gwerə-1 in Indo-European roots + center.
(American Heritage® Dictionary of the English Language, Fourth Edition)
bary- +‎ center (Wiktionary)

Examples

  • Stars in pairs both orbit around a point in space called a barycenter, and researchers at times saw these orbits were slightly off, suggesting the presence of a planet tugging at both stars.

    Yahoo! News: Business - Opinion

  • Stars in pairs both orbit around a point in space called barycenter, and researchers at times saw these orbits were slightly off, suggesting the presence of a planet tugging at both stars.

    Breaking News: CBS News

  • OK… in refreshing my knowledge, I’m guessing the location of the barycenter is the deciding factor here… One just hope that the “official” definition, when agreed upon, is more exhaustive than that quoted in the article in order to make that clear…

    A Special Message From Scott “Pluto Hayta” Westerfeld « Whatever

  • The oxygen sits near the barycenter of the tetrahedron.

    Quantum Hyperion

  • The individuals of the population all exist in a relatively small locus in gene space, as a cloud of data points---obviously, with a barycenter.

    Teach the Controversy

  • Think of a "population barycenter", where different parts of the population system individuals have unequal survival differentials, even if only very slight.

    Teach the Controversy

  • As the generations pass by, it is rather obvious that the barycenter will drift in a nonrandom direction if the differentials are not "symmetric" around it.

    Teach the Controversy

  • Secondly, imagine them not simply floating semi-idly but rather orbiting an apparent barycenter, like an underwater solar system of satellite hatcheries revolving around a feeder sphere from which nutrients ooze out and are fling outwards towards awaiting hungry fishes.

    Aquapod®

  • Even if we accept this as true, the barycenter of this relationship is far closer to the writer than to the reader.

    What Authors Know About Their Characters « Whatever

  • Ditto if someone should spot a pair of Jupiter-sized objects orbitting one another with a barycenter between them around some distant star.

    Dwarf Planets « Whatever

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