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1184 entries found
ur- 
prefix meaning "original, earliest, primitive," from German ur- "out of, original," from Proto-Germanic *uz- "out," from PIE *ud- "up, out" (see out (adv.)) At first only in words borrowed from German (such as ursprache "hypothetical primitive language"); since mid-20c. a living prefix in English. Compare also Urschleim under protoplasm and Urquell under Pilsner.
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uro- 
word-forming element meaning "urine," from Greek ouron "urine" (see urine).
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utero- 
before vowels uter-, word-forming element, from combining form of Latin uterus (see uterus).
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U-bahn (n.)
German or Austrian subway system, 1938 (originally in reference to Berlin), from German U-bahn, short for Untergrund-bahn, literally "underground railway."
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U-boat (n.)
1916 (said to have been in use from 1913), partial translation of German U-Boot, short for Unterseeboot, literally "undersea boat."
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U-turn (n.)
1934, from U + turn (n.). So called in reference to the shape of the path described.
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U.K. 
abbreviation of United Kingdom, attested from 1883.
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U.N. 
abbreviation of United Nations, attested from 1946.
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ubeity (n.)
"whereness," 1670s, from Modern Latin ubietas, from Latin ubi "where" (see ubi).
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ubi 
"place, location, position," 1610s, common in English c. 1640-1740, from Latin ubi "where?, in which place, in what place," relative pronominal adverb of place, ultimately from PIE *kwo-bhi- (source also of Sanskrit kuha, Old Church Slavonic kude "where"), locative case of pronominal root *kwo-. Ubi sunt, literally "where are" (1914), in reference to lamentations for the mutability of things is from a phrase used in certain Medieval Latin Christian works.
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