dual
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
- It is the Consummation of the Truth of indivi- dual spiritual things. (Sefer Yetzirah, Westcott 1893) tree →
- 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.