- An angle greater than 90° and less than 180°.钝角：一个大于90°而小于180°的角
- unity
- Unity College
- Unity College
- univ.
- Univ.
- univalent
- univalve
- univalved
- universal
- Universal Coordinated Time
- universal coupling
- universal coupling
- universal donor
- universal grammar
- universalise
- universaliser
- universalism
- universalisms
- Universalist
- universalistic
- universalities
- universality
- universalize
- universalized
- universalizes