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⇱ upper bound - WordReference.com Dictionary of English

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upper bound

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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.

'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

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