Subset

/ˈsʌbˌsɛt/

Meaning & Definition

noun
A set that is entirely contained within another set.
The set of even numbers is a subset of the set of integers.
Any portion of a larger group or category.
The group of volunteers is a subset of the entire community.
In mathematics, a subset is a collection of elements that are all members of another set.
If A = {1, 2, 3} and B = {1, 2}, then B is a subset of A.

Etymology

Derived from 'sub-' meaning 'under' and 'set' from Latin 'satus,' meaning 'to place.'

Common Phrases and Expressions

proper subset
A subset that contains some but not all elements of the larger set.
null subset
The subset that contains no elements, also known as the empty set.
power set
The set of all possible subsets of a given set.

Related Words

set
A collection of distinct objects, considered as an object in its own right.
element
An individual object or member of a set.
union
The set containing all elements of two or more sets.

Slang Meanings

A smaller or specialized group within a larger community.
That gamer community is just a subset of the larger online gaming world.
A specific category within a broader classification.
The tech startup scene is a subset of the overall business landscape.