U字母開頭的單詞或詞組(第7頁)：
- uncatalyzed reaction
- undermentioned
- undesired signal
- unimpeded
- uterine contraction
- utility sinking fund
- unbalanced network
- upper bound
- uneven market
- uranium trioxide
- unformatted sequential file
- uncontradictable
- unsafe region
- university computing company
- unavoidable cost
- uncertain knowledge
- uproarious
- up data link
- ulnare
- unsounded
- unnumbered
- upperworks
- undousing current
- uncommitted reserve
- upstream bandwidth
- Unna's stain
- UNC
- uzarin
- ullem
- uniprogramming system
- unimolecular
- urachal cyst
- unit sequence starting relay
- urticatus
- unit limitation of liability
- uniform commercial code
- unblessed
- ultrasonic level gauge
- upper state symbol
- unambiguous