Dual means something has two parts or two roles. It shows that two things work or exist together. This word is easy to use when talking about two connected items.
She has a dual role in the company.
The car has dual airbags for safety.
Dual means that a device or system uses two of the same parts. For example, a phone can have two SIM cards, or a computer screen setup can have two monitors.
My phone supports dual SIM cards.
We use dual monitors at work now.
In grammar, dual is a special form. It is used for two things or people. Not many languages have this form, but it is important in some ones like Arabic or Slovene.
Some languages have a dual number.
The dual shows two items clearly.
Dual in engineering means two connected parts work together to perform a job. Examples include dual clutches in cars or dual brakes on bikes that control safety better.
The car uses a dual-clutch system.
Dual brakes make the bike safer.
Dual is used in math or logic to talk about things that have a pair or mirror image. For example, a dual problem has a close connection to another, often opposite, problem.
The dual problem mirrors the original problem.
Dual spaces appear in advanced math studies.
Dual means a person belongs to two countries at the same time. It is common in law and travel when someone has two passports or citizenship papers.
He has dual citizenship in Canada and the US.
Many people live with dual nationality.
Dual in music means two sounds or parts happen together. It can be two voices, two instruments, or two musical lines that work together in a piece.
The choir sang a dual voice piece.
The song has dual guitar parts.
