GLOSSARY. 



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Un'dulated (Lat. un'da, a wave). 

 Wavy ; in botany, applied to leaves 

 with wavy or crisp margins. 



Undula'tion (Lat. un'da, a wave). A 

 waving motion, or formation of 

 waves ; in physics, the vibration of 

 a substance in the manner of waves. 



Un'dulatory (Lat. un'da, a wave). 

 Moving like waves. 



Un'dulatory The'ory. In optics, the 

 theory which supposes light to be 

 produced by the undulation of a 

 subtle fluid, as sound is produced 

 by undulations of the air. 



Unguic'ulate (Lat. un'ywis, a nail or 

 claw). Having claws. 



Un'guiform (Lat un'guis, a nail or 

 claw; for'ma, shape). Like a claw. 



ITnguis (Lat). A nail or claw ; in 

 anatomy, the name of a small bone 

 of the face ; in botany, the lower 

 part of a petal. 



Un'gula (Lat). A hoof ; in geometry, 

 a part cut off from a cylinder, 

 cone, &c., by a plane passing ob- 

 liquely through the base and part 

 of the curved surface. 



Un'gulate (Lat. un'gula, a hoof). 

 Hoof-shaped ; having hoofs. 



Uni- (Lat. u'nus, one). A prefix in 

 compound words, signifying one. 



Uniax'ial (Lat. u'nus, one ; axis). 

 Having but one axis. 



Unicellular (Lat. u'nus, one ; cel'- 

 lula, a cell). Composed of one cell. 



Unicos'tate (Lat. u'nus, one ; cos'ta, 

 a rib). Having one rib. 



Unifa'cial (Lat. u'nus, one ; fac'ies, 

 a face). Having but one front sur- 

 face. 



Uniflo'rous (Lat. u'nus, one ; flos, a 

 flower). Having but one flower. 



Unig'enous (Lat. u'nus, one ; gen' us, 

 a kind). Of one kind. 



Unij'ugate (Lat. u'nus, one ; ju'go, I 

 yoke). In botany, applied to a 

 penninerved compound leaf, with 

 only one pair of leaflets. 



UnilaTriate (Lat. u'nus, one ; la'bium, 

 a lip.) Having one lip only. 



Unilateral (Lat. u'nus, one; la'tus, 

 a side). Being on one side only ; 

 having one side. 



Unilit'eral (Lat. u'nus, one ; lit! era, 

 a letter). Having one letter 



Uniloc'ular (Lat. u'nus, one ; loc'ulus, 

 a little place). Having one cavity. 



Unip'arous (Lat. u'nus, one ; par'io, 

 I bring forth). Bringing forth 

 only one. 



Uniper'sonal (Lat. u'nus, one ; per- 

 so'na, a person). Having only one 

 person. 



Unipet' alous (Lat. u'nus, one ; petfal). 

 Having one petal only. 



Unisex'ual (Lat. u'nus, one ; sexfus, 

 a sex). Having one sex only ; ap- 

 plied to plants having separate 

 male and female flowers. 



U'nison (Lat. u'nus, one ; so'nus, a 

 sound). A coincidence in sounds 

 arising from an equality in the 

 number of vibrations. 



U'ni valve (Lat. u'nus, one ; valve). 

 Having one valve only. 



U'niverse (Lat. u'nus, one ; versus, 

 turned). The collective term for 

 all the bodies which are the objects 

 of astronomical observation. 



Univ'ocal (Lat. u'nus, one ; vox, 

 voice). Having only one meaning. 



Unstrat'ified (Un, implying not; Lat. 

 stra'tum, a layer ; fac'io, I make). 

 Not stratified ; in geology, applied 

 to rocks which do not occur in 

 strata or layers, but in shapeless 



Uranog'raphy (Gr. ovpavos, ou'ranos, 

 heaven ; ypctyw, graph'o, I write). 

 A definition of a heavenly body, as 

 of a planet. 



U'rate (Uric). A compound of uric 

 acid with a base. 



Ur'ceolate (Lat. ur'ceola, a pitcher). 

 Shaped like a pitcher. 



Ure'a. An organic compound formed 

 in the animal body. 



U'tricle (Lat. utridulus, a little bag). 

 A little bag or cell; in botany, a 

 thin-walled cell, or a bladder-like 

 covering. 



Utric'ular (U'tricle). Containing utri- 

 cles or vessels like small bags. 



U'vea (Lat. u'va, a grape). The co- 

 vering of dark pigment which lines 

 the posterior surface of the iris in 

 the eye. 



U'vula (Lat. u'va, a grape). The 

 small fleshy part which hangs down 

 at the back of the soft palate. 



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