WordReference Random House Unabridged Dictionary of American English © 2026
up′per bound′, [Math.]
- Mathematicsan element greater than or equal to all the elements in a given set: 3 and 4 are upper bounds of the set consisting of 1, 2, and 3. Cf. bound 3 (def. 4), greatest lower bound, least upper bound, lower bound.
(Advertisement)
'upper bound' also found in these entries (note: many are not synonyms or translations):
bound
- bounded
- complemented
- complete
- lattice
- least upper bound
- lub
- oscillation
- union
- Zorn's lemma
- sublattice
- supremum
