dual
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Is dual a Scrabble word?
Word Games
- Scrabble US/Canada (OTCWL) Yes
- Scrabble UK (SOWPODS) Yes
- Wordle No
- Words With Friends Yes
Scrabble US/Canada (OTCWL) 
Wordle 
Words With Friends What is the meaning of dual?
Definition
adj (English)
1. (grammar) Pertaining to a grammatical number in certain languages that refers to two of something, such as a pair of shoes.Examples: "Modern Arabic displays a dual number, as did Homeric Greek."not-comparable
2. (mathematics, physics) Exhibiting duality.not-comparable
3. (linear algebra) Being the space of all linear functionals of (some other space).Examples: "Accordingly, a hyperplane in the sample space is dual to a subspace in the variable space."not-comparable
4. (category theory) Being the dual of some other category; containing the same objects but with source and target reversed for all morphisms.Examples: "Every category is dual to its own dual, so if a statement holds in all categories so does its dual."Synonyms: oppositenot-comparable
noun (English)
1. (geometry) Of a regular polyhedron with V vertices and F faces, the regular polyhedron having F vertices and V faces.Examples: "The octahedron is the dual of the cube."
2. (grammar) The dual number.
3. (mathematics) Of a vector in an inner product space, the linear functional corresponding to taking the inner product with that vector. The set of all duals is a vector space called the dual space.
4. (wrestling) A head-to-head match or meet between two teams, such as two high schools or colleges.Examples: "Wrestling duals and meets take place at the Wisconsin Field House. There are no advance single event ticket sales."; "But Dave agreed to participate in the Bulgarian dual, and that trapped me into having to wrestle, too."; "Early in 2021, she became the first female to compete and win a match at the Ter-Hark Cup wrestling dual, helping her squad to victory."
verb (English)
1. (transitive) To convert from single to dual; specifically, to convert a single-carriageway road to a dual carriageway.Examples: "I have to declare an interest and I do so with some ambivalence because if the road is dualled it is likely to take half of my front garden."; "The power generation and propulsion systems are dualled to accommodate component failure and maintain propulsion at reduced speed should any part of one system be lost."; "The investment will allow Nexus to increase service frequencies, reduce journey times, and improve reliability by dualling three sections of line between Pelaw and South Shields."transitive
Definition source: Wiktionary