1. subgroup - Noun
2. subgroup - Verb
A subdivision of a group, as of animals.
Source: Webster's dictionaryAtheists are the fastest-growing religious subgroup in all fifty states. There are more atheists in this country than there are Jews, Muslims, Hindus, and Buddhists combined and doubled. David Silverman
THEOREM: if G is a locally euclidean, connected, simply connected topological group of dimension n greater than one, then G contains a closed proper subgroup of positive dimension. Deane Montgomery
A 2017 investigation revealed the depths of horrifying things happening under the cover of the "self-help" program, particularly in a supersecret subgroup dubbed "DOS." Source: Internet
According to another view, the Anatolian subgroup left the Indo-European parent language comparatively late, approximately at the same time as Indo-Iranian and later than the Greek or Armenian divisions. Source: Internet
Algebraic topology, for example, allows for a convenient proof that any subgroup of a free group is again a free group. Source: Internet
A group is polycyclic if it has a finite descending sequence of subgroups, each of which is normal in the previous subgroup with a cyclic quotient, ending in the trivial group. Source: Internet