U字母開頭的單詞或詞組(第4頁)：
- unmatchable
- uncture
- universal network
- uncoupling
- upper pole
- uterine
- Ucko's reaction
- ureterotrigono-enterostomy
- urogastrone
- uniflow
- uniprogrammed system
- unimpaired prestige
- unsaturated tree
- ultimate beneficiary
- unauthorized
- uterine hernia
- unstarred nonterminal
- United States court of claims
- Urtica L.
- unseasoned
- upswept
- undecalcified
- unsupervised classification
- ungrammatical
- undivided share
- uniform command language
- ureterectasia
- ultraviolet cell
- unstriped
- uterine neck
- urinary apparatus
- umbilici
- uncouple
- urethroplasty
- unrepealable
- unadjudged
- unsoundness of mind
- upper arm
- unsym-dichloroacetone
- unsuccessful party