duals
- 1Plural of dual.
Many ancient languages had distinct duals for naturally paired body parts.
In linear algebra, the duals of these vector spaces share the same dimension.
Note
Only the noun takes the -s: the adjective dual, as in a dual purpose, never pluralizes. The plural ranges across very different fields. Grammarians compare the duals of ancient languages, and geometers pair each regular polyhedron with its dual. In linear algebra, the duals of a space's vectors together form the dual space. In school and college sport, duals are head-to-head meets between two teams.
duals is a form of dual
dual, noun: In certain languages, the grammatical number used for exactly two of something, as distinct from the singular and the plural. Full entry
- Forms
- dualduals plural
- Spelling
- dual → duals: add -s
- Sound
- The ending sounds like /z/.
Use it in a sentence
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