subgroup

[ suhb-groop ]

/ ˈsʌbˌgrup /

a subordinate group; a division of a group.

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

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

Origin of subgroup

First recorded in 1835–45; sub- + group

I think one of the main issues would be that there may be a subgroup of people who may run into problems with compulsive use.

Does Porn Cause Brain Shrinkage In Men? |Emily Shire |May 31, 2014 |DAILY BEAST
It means treating women not as some alien species or subgroup.

What the GOP Can Learn from the NFL’s Outreach to Women |Kristen Soltis Anderson |January 30, 2014 |DAILY BEAST
There's a subgroup that both attends and mocks, but it's tiny.

World to Davos: Will You Admit You Screwed Up? |David Frum |January 28, 2013 |DAILY BEAST
An Islamist subgroup – the Brigade of Islam – also claimed responsibility, but the two stories are not incompatible.

Richard Spencer: What's Next in Syria |The Telegraph |July 19, 2012 |DAILY BEAST

If improvements were long confined to one subgroup, they might send labor into other subgroups and even into other general groups.

Essentials of Economic Theory |John Bates Clark
It belongs to a subgroup and is a product of the mores of a subgroup.

Folkways |William Graham Sumner
New Georgia Island, the main member of the subgroup, is 50 miles long (northwest to southeast) and from five to 30 miles wide.

Systematics of Megachiropteran Bats in the Solomon Islands |Carleton J. Phillips
The totality of motions which leave a point A unchanged forms a subgroup.

Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 |Various
On the other hand, a subgroup of the group of motions which leaves a line or a plane unaltered is a mixed group.

Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 |Various

subgroup

/ (ˈsʌbˌɡruːp) /

a distinct and often subordinate division of a group

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