U字母開頭的單詞或詞組(第6頁)：
- ultramundane
- urogenital tuberculosis
- upper retina
- underarm
- upon tut
- upper
- use of revert statement
- unrein
- up for
- up-and-down motion
- undivided responsibility
- umbilical vesicle
- ursine
- uncloak
- unforgettable
- unclubbable
- uranides
- ultimate particle
- ultraviolet spectrophotometry
- uterotome
- unrighteous judgement
- underexpose
- unauthorized use
- under-the-counter
- undue
- usance bill
- unbroken ground
- unsigned integer
- unipolar dynamo
- unilization ratio
- unidirectional element
- underlying security
- uterine mask
- underskirt
- uxorious
- unconditional acceptance
- ulaemorrhagia
- urethrocele
- utero-ovarian
- unkindly