dual

«dual» in Mova's school dictionary: Having two parts, uses or sides; double — its meaning for a pupil, its sense in the lessons and examples.

part of speech

adjective

meaning for a pupil

1) Having two parts, uses or sides; double. tree →

2) dual nationality / dual citizenship: being a citizen of two countries at the same time. tree →

3) (maths) In some topics, dual means a matching partner shape or idea (for example, a cube and an octahedron are duals). tree →

sense in the lessons

In everyday life: dual carriageway (a road with two lanes each way, UK), dual-language books, dual controls in a learner car; in maths and geography; phrases: «dual carriageway», «dual citizenship», «dual purpose».

examples

• My cousin has dual citizenship: Irish and Australian. tree →
• This book is dual-language, English on one page and French on the other. tree →
• Driving schools use cars with dual controls. tree →
• The road becomes a dual carriageway after the roundabout. tree →
• This tool has a dual purpose: a torch and a whistle. tree →
• The game has a dual-screen mode. tree →

note

Homophone trap: dual (two) vs duel (a fight between two people). Tip: «dual» has «a» like «a pair». Not used about people (do not say «dual twins»).

Trees and pragmatics

Every meaning and example of «dual» parsed by Mova, each sentence with its dependency tree and frames.