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subgroup

American  
[suhb-groop] / ˈsʌbˌgrup /

noun

  1. a subordinate group; a division of a group.

  2. Chemistry. a division of a group in the periodic table.

  3. Mathematics. a subset of a group that is closed under the group operation and in which every element has an inverse in the subset.


subgroup British  
/ ˈsʌbˌɡruːp /

noun

  1. a distinct and often subordinate division of a group

  2. a mathematical group whose members are members of another group, both groups being subject to the same rule of combination

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of subgroup

First recorded in 1835–45; sub- + group

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The results are estimated to have a margin of error of 3.1 percentage points in either direction in the overall sample, and larger numbers for subgroups.

From Los Angeles Times

All student subgroups— including children of immigrants, racial minorities and those with parents without higher education — increased their passing rate in the last five years.

From Los Angeles Times

"There was recognition that there is a very small subgroup of children whose gender incongruence persists long-term and who may require ongoing support and possible medical interventions," the review said.

From BBC

For example, different subgroups of meningococcal meningitis dominate in Europe than in the U.S.,

From The Wall Street Journal

There are many questions these AZA matchmakers ask themselves before making breeding recommendations, and they extend beyond genetic and personality compatibility: Will these animals be able to create subgroups?

From Los Angeles Times