Expressing, or consisting of, the number two; belonging to two; as, the dual number of nouns, etc. , in Greek.
- Composed of two usually like or complementary parts; double: dual controls for pilot and copilot; a car with dual exhaust pipes.
- Having a double character or purpose: a belief in the dual nature of reality.
- Grammar Of, relating to, or being a number category that indicates two persons or things, as in Greek, Sanskrit, and Old English.
- Grammar The dual number.
- Grammar An inflected form of a noun, adjective, pronoun, or verb used with two items or people.