Otoba fat O·to"ba fat` (Chemistry) A colorless buttery substance obtained from the fruit of Myristica otoba , a species of nutmeg tree.

Otoconite O·toc"o·nite noun [ Oto- + Greek ... dust.] (Anat.) (a) A mass of otoliths. (b) An otolith.

Otocrane O"to·crane noun [ Oto- + Greek ... skull.] (Anat.) The cavity in the skull in which the parts of the internal ear are lodged.

Otocranial O`to·cra"ni·al adjective (Anat.) Of or pertaining to the otocrane.

Otocyst O"to·cyst noun [ Oto- + cyst .] (Zoology & Anat.) An auditory cyst or vesicle; one of the simple auditory organs of many invertebrates, containing a fluid and otoliths; also, the embryonic vesicle from which the parts of the internal ear of vertebrates are developed.

Otography O·tog"ra·phy noun [ Oto- + -graphy .] A description of the ear.

Otolith, Otolite O"to·lith, O"to·lite noun [ Oto- + -lith , -lite .] (Anat.) One of the small bones or particles of calcareous or other hard substance in the internal ear of vertebrates, and in the auditory organs of many invertebrates; an ear stone. Collectively, the otoliths are called ear sand and otoconite .

Otolithic, Otolitic O`to·lith"ic, O`to·lit"ic adjective (Anat.) Of or pertaining to otoliths.

Otological O`to·log"ic·al adjective Of or pertaining tootology.

Otologist O·tol"o·gist noun One skilled in otology; an aurist.

Otology O·tol"o·gy noun [ Oto- + - logy .] The branch of science which treats of the ear and its diseases.

Otopathy O·top"a·thy noun [ Oto- + Greek ... to suffer.] (Medicine) A diseased condition of the ear.

Otorrhœa O`tor·rhœ"a noun [ New Latin , from Greek o'y^s , 'wto`s , the ear + ... to flow.] (Medicine) A flow or running from the ear, esp. a purulent discharge.

Otoscope O"to·scope noun [ Oto- + - scope .] An instrument for examining the condition of the ear.

Otoscopeic O`to·scope"ic adjective Of or pertaining to the otoscope or to otoscopy.

Otoscopy O·tos"co·py noun (Medicine) The examination of the ear; the art of using the otoscope.

Otosteal O·tos"te·al noun [ Oto- + Greek ... a bone.] (Anat.) An auditory ossicle. R. Owen.

Otozoum O`to·zo"um noun [ New Latin , from Greek ..., a fabled giant + zo^,on an animal.] (Paleon.) An extinct genus of huge vertebrates, probably dinosaurs, known only from four-toed tracks in Triassic sandstones.

Ottar Ot"tar noun See Attar .

Ottava rima Ot·ta"va ri"ma [ Italian See Octave , and Rhyme .] (Pros.) A stanza of eight lines of heroic verse, with three rhymes, the first six lines rhyming alternately and the last two forming a couplet. It was used by Byron in "Don Juan," by Keats in "Isabella," by Shelley in "The Witch of Atlas," etc.

Ottawas Ot"ta·was noun plural ; sing. Ottawa (Ethnol.) A tribe of Indians who, when first known, lived on the Ottawa River. Most of them subsequently migrated to the southwestern shore of Lake Superior.

Otter Ot"ter noun [ Middle English oter , Anglo-Saxon otor ; akin to D. & German otter , Icelandic otr , Danish odder , Swedish utter , Lithuanian udra , Russ, vuidra , Greek "y`dra water serpent, hydra, Sanskrit udra otter, and also to English water . √137, 215. See Water , and confer Hydra .]

1. (Zoology) Any carnivorous animal of the genus Lutra , and related genera. Several species are described. They have large, flattish heads, short ears, and webbed toes. They are aquatic, and feed on fish. Their fur is soft and valuable. The common otter of Europe is Lutra vulgaris ; the American otter is Latin Canadensis ; other species inhabit South America and Asia.

2. (Zoology) The larva of the ghost moth. It is very injurious to hop vines.

Otter hound , Otter dog (Zoology) , a small breed of hounds, used in England for hunting otters. -- Otter sheep . See Ancon sheep , under Ancon . -- Otter shell (Zoology) , very large bivalve mollusk ( Schizothærus Nuttallii ) found on the northwest coast of America. It is excellent food, and is extensively used by the Indians. -- Sea otter . (Zoology) See in the Vocabulary.

Otter Ot"ter noun A corruption of Annotto .

Otto Ot"to noun See Attar .

Otto cycle Ot"to cy`cle (Thermodynamics) A four- stroke cycle for internal-combustion engines consisting of the following operations: First stroke, suction into cylinder of explosive charge, as of gas and air; second stroke, compression, ignition, and explosion of this charge; third stroke (the working stroke), expansion of the gases; fourth stroke, expulsion of the products of combustion from the cylinder. This is the cycle invented by Beau de Rochas in 1862 and applied by Dr. Otto in 1877 in the Otto-Crossley gas engine, the first commercially successful internal-combustion engine made.

Otto engine Otto engine An engine using the Otto cycle.

Ottoman Ot"to·man adjective [ French ottoman : confer Italian ottomano , ottomanno ; -- from Othoman , Othman , or Osman , the name of a sultan who assumed the government of Turkey about the year 1300. Confer Osmanli , Ottoman a stuffed seat.] Of or pertaining to the Turks; as, the Ottoman power or empire.

Ottoman Ot"to·man noun ; plural Ottomans 1. A Turk.

2. [ French ottomane , from ottoman Turkish.] A stuffed seat without a back, originally used in Turkey.

Ottomite Ot"to·mite noun An Ottoman. [ R.] Shak.

Ottrelite Ot"trel·ite noun [ From Ottrez , on the borders of Luxembourg.] (Min.) A micaceous mineral occurring in small scales. It is characteristic of certain crystalline schists.

Ouakari Oua·ka"ri noun [ From the native name.] (Zoology) Any South American monkey of the genus Brachyurus , especially B. ouakari .

Ouananiche Oua`na`niche" noun [ Canadian F., of Amer. Indian origin.] A small landlocked variety of the Atlantic salmon ( Salmo salar ounaniche ) of Lake St. John, Canada, and neighboring waters, noted for its vigor and activity, and habit of leaping from the water when hooked.

Ouanderoo Ouan`der·oo" noun (Zoology) The wanderoo.

Ouarine Oua`rine" noun [ French] (Zoology) A Brazilian monkey of the genus Mycetes.

Oubliette Ou`bli`ette" noun [ French, from oublier to forget, from (assumed) Late Latin oblitare , Latin oblivisci , past participle oblitus .] A dungeon with an opening only at the top, found in some old castles and other strongholds, into which persons condemned to perpetual imprisonment, or to perish secretly, were thrust, or lured to fall.

Sudden in the sun
An oubliette winks. Where is he? Gone.

Mrs. Browning.

Ouch Ouch (ouch) noun [ Middle English ouch , nouche ( a nouch being taken for an ouch : confer Adder ), from Old French nusche , nosche , nousche , buckle, clasp, Late Latin nusca , from Old High German nusca , nuscha .] A socket or bezel holding a precious stone; hence, a jewel or ornament worn on the person.

A precious stone in a rich ouche .

Sir T. Elyot.

Your brooches, pearls, and ouches .

Shak.

Oughne Ough"ne (ō"n e ) adjective Own. [ Obsolete] Chaucer.

Ought Ought (at) noun & adverb See Aught .

Ought Ought imperfect , past participle , or auxiliary . [ Orig. the preterit of the verb to owe . Middle English oughte , aughte , ahte , Anglo-Saxon āhte . √110. See Owe .] 1. Was or were under obligation to pay; owed. [ Obsolete]

This due obedience which they ought to the king.

Tyndale.

The love and duty I long have ought you.

Spelman.

[ He] said . . . you ought him a thousand pound.

Shak.

2. Owned; possessed. [ Obsolete]

The knight the which that castle ought .

Spenser.

3. To be bound in duty or by moral obligation.

We then that are strong ought to bear the infirmities of the weak.

Rom. xv. 1.

4. To be necessary, fit, becoming, or expedient; to behoove; -- in this sense formerly sometimes used impersonally or without a subject expressed. "Well ought us work." Chaucer.

To speak of this as it ought , would ask a volume.

Milton.

Ought not Christ to have suffered these things?

Luke xxiv. 26.

» Ought is now chiefly employed as an auxiliary verb, expressing fitness, expediency, propriety, moral obligation, or the like, in the action or state indicated by the principal verb.

Syn. -- Ought , Should . Both words imply obligation, but ought is the stronger. Should may imply merely an obligation of propriety, expendiency, etc.; ought denotes an obligation of duty.

Oughtness Ought"ness noun The state of being as a thing ought to be; rightness. [ R.] N. W. Taylor.

Oughwhere Ough"where` adverb [ Anglo-Saxon āhwær .] Anywhere; somewhere. See Owher . [ Obsolete]

Ouistiti Ouis"ti·ti noun [ French] (Zoology) See Wistit .

Oul Oul noun An awl. [ Obsolete] Chaucer.

Oul Oul noun An owl. [ Obsolete] Chaucer.

Oulachan Ou"la·chan noun (Zoology) Same as Eulachon .

Ounce Ounce noun [ French once , from Latin uncia a twelfth, the twelfth part of a pound or of a foot: confer Greek ... bulk, mass, atom. Confer 2d Inch , Oke .] 1. A weight, the sixteenth part of a pound avoirdupois, and containing 437... grains.

2. (Troy Weight) The twelfth part of a troy pound.

» The troy ounce contains twenty pennyweights, each of twenty-four grains, or, in all, 480 grains, and is the twelfth part of the troy pound. The troy ounce is also a weight in apothecaries' weight. [ Troy ounce is sometimes written as one word, troyounce .]

3. Fig.: A small portion; a bit. [ Obsolete]

By ounces hung his locks that he had.

Chaucer.

Fluid ounce . See under Fluid , noun

Ounce Ounce noun [ French once ; confer Italian lonza , Spanish onza ; probably for lonce , taken as l'once , from Latin lynx , Greek ..., or an (assumed) fem. adj. lyncea , from lynx . Confer Lynx .] (Zoology) A feline quadruped ( Felis irbis, or uncia ) resembling the leopard in size, and somewhat in color, but it has longer and thicker fur, which forms a short mane on the back. The ounce is pale yellowish gray, with irregular dark spots on the neck and limbs, and dark rings on the body. It inhabits the lofty mountain ranges of Asia. Called also once .

Ounded, Oundy Ound"ed, Oun"dy adjective [ French ondé , -ée , from onde , Latin unda , a wave.] Wavy; waving... curly. [ Obsolete] " Owndie hair." Chaucer.

Ounding Ound"ing verbal noun Waving. [ Obsolete]

Ounding , paling, winding, or bending . . . of cloth.

Chaucer.

Ouphe Ouphe noun [ See Auf .] A fairy; a goblin; an elf. [ Obsolete] "Like urchins, ouphes , and fairies." Shak.

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