What does superset mean?
A superset is a larger set that contains every member of another set, together with any number of additional members. For example, if A contains only the letters in “cat,” then A together with “dog” forms a superset of A. The term is especially common in mathematics, where the relationship is used to compare the scope and composition of sets. It is also used in computing, product design, publishing, and other contexts to describe an expanded version that retains the original features while adding new ones. A strict superset includes at least one additional element. The opposite relationship is a subset, which contains some or all of the elements of a larger set. Outside technical subjects, “superset” can sound somewhat formal, but it clearly conveys a comprehensive collection or version that includes everything in a given original.
nounA set that contains every element of another set and may also contain additional elements. More broadly, it is a larger collection that includes everything in a specified original collection.
- In mathematics, a set that contains all the elements of another set and may contain additional elements.
- In general usage, a larger collection or range that includes everything in an original collection along with additional items.
"The full edition is a superset of the standard edition and includes several additional chapters."
"The set of even integers together with zero forms a superset of the set of even integers."
"The revised package is a superset of the standard package and includes extra accessories."
The plural is used when referring to multiple sets or collections that each extend another set or collection.
"The two supersets share many entries but differ in how many examples they include."
A superset is to a set what an expanded edition is to a book: everything from the original, plus more.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does superset come from?
The word was formed in English by combining the prefix super-, meaning “over” or “beyond,” with set. The prefix comes ultimately from Latin super, “above, over, or beyond,” the same root found in superior, supervise, and superintendent. In mathematical usage, “superset” names a set that extends another set by including all of its elements.
Related word forms
How superset is actually used
The term is most common in mathematics, computing, and product or collection comparisons. A strict superset contains at least one element not found in the smaller set.
Easily confused with superset
A superset contains every element of another set, whereas a subset contains only some or all of the elements of a larger set.