Definitions

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

  • n. A distinct group within a group; a subdivision of a group.
  • n. A subordinate group.
  • n. Mathematics A group that is a subset of a group.
  • transitive v. To divide into subgroups.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A group within a larger group; a group whose members are some, but not all, of the members of a larger group.
  • n. A subset H of a group G that is itself a group and has the same binary operation as G.
  • v. To divide or classify into subgroups

from the GNU version of the Collaborative International Dictionary of English

  • n. A subdivision of a group, as of animals.

from The Century Dictionary and Cyclopedia

  • n. Any subordinate group in classification; a subdivision of a group; especially, a division the name of which begins with sub-, as subfamily or subgenus.
  • n. A mathematical group forming part of another group.

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

  • n. (mathematics) a subset (that is not empty) of a mathematical group
  • n. a distinct and often subordinate group within a group

Etymologies

sub- +‎ group (Wiktionary)

Examples

  • So the minimum number required to count a subgroup is a GOOD feature of the law, and if anything, that number is too low in most cases.

    Think Progress » Leaving minorities behind.

  • Drawing on exit polls, he infers that this subgroup is likely two-thirds Latino and concludes that, as such, the apparent shift to Republicans is the "most implausible result" in the Gallup Poll.

    Gallup's Frank Newport Responds To Criticism

  • The problem with my subgroup is that I don't think this 'shutdown' will ever be possible.

    Colonel Candid with the Dagger in the Conference Room

  • Then you cannot have one group bringing the scores up to passing when a subgroup is “left behind”

    Think Progress » Leaving minorities behind.

  • Whatever a federal grand jury investigating the case decides, a small political subgroup is experiencing the odd sensation that this leak has sprung before.

    08/06/2005

  • Just a blurry sense-of-wonder and lots of repetitive pseudo-adventures: Clone subgroup leaves moon; clone subgroup is stranded on Earth; clone subgroup explores their "new" world.

    REVIEW: Terraforming Earth by Jack Williamson

  • The Motor Software subgroup is being useless still, but half of the Sensors group is working on some of their hard problems now, so that should sort itself soon enough.

    June 23rd, 2004

  • So of the Iraqis who choose the 6-month position – and this subgroup is overwhelmingly Sunni, for what it’s worth – relatively few of them are making a judgment that things would be safer or “better off” without the US presence.

    Matthew Yglesias » What Do Iraqis Think?

  • Not only are all the kids tested, their scores are broken out into separate categories so everyone can see them - called subgroup disaggregation - and these scores can make or break whether a school's annual rating goes up or down.

    Alexander Russo: This Test Is Too Hard

  • A (nonempty) subset H of G is called a subgroup of G if H is a group in respect to the same operation '+'.

    Phrack Issue #63 (The Lost Circle of Hackers)

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