oscillation (osilashon)

[= F. oscillation Oscinis (os'i-nis), n. [NL. (Latreille, 1804), = Sp. oscilacion = Pg. oscillação = It. oscilla- appar. irreg. If we give to a pendulum at rest a slight impulse, or a strong impulse, the oscillations will be respectively small or large; but for the same pendulum the duration of each oscillation will be always the same. Blaserna , Sound, p. 2. sects, made the type of the family Oscinidæ, or placed in the family Chloropida. It is composed of small or very small dark-colored flies, distinguished from Chlorops by the extension of the marginal vein to the end of the fourth longitudinal vein, and from Siphon ell a by its shorter scutellum and impre ed lower face. The larvæ are mostly leaf-miners, and the flies are usually caарtured in gra . Many European and American species are described. O. frit or O. vast at or is very destructive to grain in Europe; and O. bra icæ and 0. trifolii respectively damage cabbage and clover in the United States. 2. Variation or fluctuation, in general; waver oscitancy (os'i-tan-si), n. [ In this human world there is a wide margin for oscilla tion . Theodore Parker , Ten Sermons, Justice and her [Conscience. 3. Same as vibration in the technical acoustical sense. [Rare.]-4. In music , same as beat1 , 7 (a), or beating, 5. [Rare] - Amplitude of a simple oscillation. See amplitude.-Angular oscillation, gyration. - Axis of oscillation of a pendulum. See axis i, Center of oscillation. See center1. - Forced oscil lations, oscillations imparted to a body by an intermittent or oscillatory force, and having a different period from those the body might have without such a force. Thus, a pendulum of given construction, at a place where gravity has a given intensity, will oscillate in a certain time, if left to itself. But by imparting an oscillatory motion to its support, it may be forced to perform oscillations of a widely different period, Syn. Swaying, etc, See mi bration. IMG:content-1887.png:[blocks in formation] cit an (t-)s, ppr. of oscitare, re, oscitari, gape, yawn: oscitate.] 1. Yawning; gaping.-2. Sleepy; drowsy; dull; sluggish. Decay of Christian Piety. oscitantly (os'i-tant-li), adv. In an oscitant manner; yawningly; drowsily. oscitate (os'i-tat), v. i.; pret. and pp. oscitated, ppr. oscitating. [ IMG:content-1888.png:[blocks in formation] osculatrix (os'kū-lā-triks), n. [NL., fem. of * osculator , a ki er, oscular i , ki : see oscu- late.] The envelop of the osculating planes of a non-plane curve. II. a . Made or consisting of willow or other shoots or twigs. osier-ait (ō'zhér-āt), n. A small island for grow- ing osiers. osier-bed (ō'zhér-bed), n . Same as osier - holt . osiered (ō'zhèrd), a . [ osier + -ed2 .] 1. Cov- ered or adorned with osiers. Collins .-2. Cov- ered with woven or plaited work of osier. Garlands of every green, and every scent, From vales deflower'd, or forest-trees branch-rent, In baskets of bright osier'd gold were brought. osiery (ō'zher-i), n.; pl. osieries (-iz). [ oserie , ozeriee , ouserie (also oseray , oserey , ozeray , F. oseraie ), an osiery, osier , osier: see osier .] the orifices by which water is expelled. See A place where osiers are grown. cuts under Porifer a and Spongilla .-2. One of Osirian (ō-siri-an), a . of a tapeworm, by means of which the animal attaches itself to its host. 3. A pax: app a- rently an erroneous abbreviation for oscula to- rium. - False osculum, in sponges, a secondary or deriv- ative osculum, specifically called a pseudos to me . -ose. See-ous. osedt, n. A corrupt Middle English contraction of worsted . oselt, n. A Middle English form of ouzel . osella (ō-sel'ä), n.; pl. oselle (-e). [It. osella , said to be uccello , a bird, because the medal ( osella ) was used for a present of birds which it had been customary for the doge to make.] A medal struck annually by the doges of Ven- ice, from 1521 till the end of the re- public, for presen- tation to various persons in the re- erally made in silver (occasionally in gold), and bore a variety of types as well as the name of the doge and the year of his reign. - Osella muranesa, a gla disk, cup, or other object inclosing one of the medals in the substance of the gla : a present fre- quently made to per- sons visiting Murano or Venice. IMG:content-1889.jpg:[ocr errors] Osella. (Size of the original.) Osiandrian (ō-si- an'dri-an), n. [ Osiander (see def.) + -ian .] A fol- lower of Andreas Osiander, a Luther an theolo- gian (1498-1552), who held that justification by faith involved the imparting to the believer of the e ential righteousne of Christ. osier (ō'zhèr), n. and a. [Formerly also ozier , osier , osyer, osyere, osyzer, osere, osier , ozier , ousier , m., osiere , oziere , osere , f., F. osier , m., dial.osière , ous ière , f., also ois is = Bret. aozil , ozil , * osaria , also, after OF., oseria , oserius, ozilium , osier, pl. osar iæ , ausariæ , osier- beds, perhaps οἶσος οι οἰσός, also οἰσυον , οἰσύα , a kind of osier; akin to ἰτέα , withy, = Ε. withe, withy.] I. n . One of various species of willow ( Salix ) whose tough flexible branches are employed for wickerwork, withes, etc. The white or common basket-osier of Europe (adventive in America) is Salix viminal is , also called velvet osier . Other important kinds are the (Norfolk) brown osier, S. triandra ; varie- ties of the rose or purple willow, S. purpure a , sometimes called red or green osier ; and the golden osier ( S. alba , var. vitellin a), with bright-yellow branches. The American black willow, S. nigra , is also available as an osier-tree, and many other willows are more or le so used. The grow- ing of osiers and their use in manufactures is in Europe a considerable industry. IMG:content-1890.jpg:[blocks in formation] IMG:content-1891.jpg:[graphic] IMG:content-1892.png:[graphic] of Osiris is placed before a square pier. It differs from the cla ical caryatid in that the pier, and not the figure, sup- ports the entablature. Osiridean (ō-si-rid'ē-an), a. [ Osiride + -an.] Same as Osirian . Osirify (ō-si'ri-fi), v . t .; pret. and pp. Osirified , ppr. Osirifying . [ Osiris (ō-sī'ris), n. [L. Osiris , Hesiri .] 1. A principal Egyptian god, personifying the power of good and the sunlight, united in his- tory and in worship in a sacred triad with Isis as his wife and Horus as their child. He is son of Seb and Nut, or Heaven and Earth. His antagonist is Set, the deity of evil or dark- ne , by whom he is slain; but he is avenged by Horus, and reigns in the low- er world. With him was formally ident i- fied every departed soul in its nether abode, to be protected by him in the nece ary conflict with the genius of evil. The worship of Osiris was extended, at about the beginning of the Christian era, over Asia Minor, Greece, and Rome. In art Osiris is usually represented as a mummy, wearing the crown of Upper Egypt, often flanked by ostrich-plumes. The accompanying cut represents a bronze figurine in the Metropolitan Museum of Art, New York. IMG:content-1893.jpg:[graphic] Osmanthus