proper subset
noun1
Mathematics, Sciences, Set theory a set that is a subset of the set, but not equal to it.
- {2, 4, 5} is a proper subset of {1, 2, 3, 4, 5}, but {1, 2, 3, 4, 5} is not.
- Hypernyms
- subset
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.