Dual

/ˈdjuːəl/

Meaning & Definition

noun
A pair of things or a system of two.
The dual of a geometric shape can be analyzed to reveal its properties.
adjective
Consisting of two parts, elements, or aspects.
The dual nature of the project requires collaboration between scientists and engineers.
Relating to or representing two things.
The dual carriageway allows for faster travel in both directions.
In grammar, relating to a form that indicates two items or people.
Some languages still have a dual form in their grammatical structure.

Etymology

From Latin 'dual-is', from 'duo' meaning 'two'.

Common Phrases and Expressions

dual citizenship:
The status of being a citizen of two countries.
dual purpose:
Having two functions or uses.
dual language:
A system that uses two languages for communication.

Related Words

Slang Meanings

Two-faced or deceptive in nature.
Don't trust him; he's as dual as they come.
Having contrasting qualities.
She's dual when it comes to her interests; she loves both sports and art.