the twenty-first letter of the English alphabet, is a cursive form of the letter V, with which it was formerly used interchangeably, both letters being then used both as vowels and consonants. U and V are now, however, differentiated, U being used only as a vowel or semivowel, and V only as a consonant. The true primary vowel sound of U, in Anglo-Saxon, was the sound which it still retains in most of the languages of Europe, that of long oo, as in tool, and short oo, as in wood, answering to the French ou in tour. Etymologically U is most closely related to o, y (vowel), w, and v; as in two, duet, dyad, twice; top, tuft; sop, sup; auspice, aviary. See V, also O and Y. [ 1913 Webster ]

See Guide to Pronunciation, §§ 130-144. [ 1913 Webster ]

n. (Zool.) Same as Ouakari. [ 1913 Webster ]

a. [ L. uber. ] Fruitful; copious; abundant; plentiful. [ Obs. ] Sir T. Herbert. [ 1913 Webster ]

n. [ L. ubertas. ] Fruitfulness; copiousness; abundance; plenty. [ Obs. ] Florio. [ 1913 Webster ]

{ } n. [ NL. ubicatio, ubietas, fr. L. ubi where. ] The quality or state of being in a place; local relation; position or location; whereness. [ R. ] Glanvill. [ 1913 Webster ]

a. Ubiquitous. [ R. ] [ 1913 Webster ]

{ } n. [ L. ubique everywhere: cf. F. ubiquiste, ubiquitaire. See Ubiquity. ] (Eccl. Hist.) One of a school of Lutheran divines which held that the body of Christ is present everywhere, and especially in the eucharist, in virtue of his omnipresence. Called also ubiquitist, and ubiquitary. [ 1913 Webster ]

n. Quality or state of being ubiquitary, or ubiquitous. [ R. ] Fuller. [ 1913 Webster ]

a. [ L. ubique everywhere. See Ubiquitarian. ] Ubiquitous. Howell. [ 1913 Webster ]

n.; pl. Ubiquitaries 1. One who exists everywhere. B. Jonson. [ 1913 Webster ]

2. (Eccl. Hist.) A ubiquist. Bp. Hall. [ 1913 Webster ]