U字母開頭的單詞或詞組(第13頁)：
- Urtica scorpionides
- universal battery system
- unsolicited key-in
- unprotected field
- unscientific
- unilaterally
- United Nations assembly
- urea ferment
- Univac Users Association
- ulalgia
- uniform precession
- us dollar crisis
- unthinkable
- unicorn root
- unfroze
- uncommunicative
- unlisted
- unlearned
- underwood
- undrew
- unapproved
- uber
- unit distance code
- UPS monitoring
- universal resonance curve
- ureterouterine
- unniloctium
- undivided share
- unskillful
- unregarded
- under cover of
- unbeaten
- uranium mercaptide
- unsealed source
- unpolluted
- unsaturated alcohol
- unit record system
- unpatened inventions
- uncollected commission
- unambiguous grammar