*aust*

n. (Metallurgy) [ From W. C. Roberts-Austen, an English metallurgist. ] a solid solution of ferric carbide or carbon in iron; -- it cools to form pearlite or martensite. [ WordNet 1.5 ]

adj. 1. of or pertaining to austenite. [ WordNet 1.5 ]

‖n. [ L. auster a dry, hot, south wind; the south. ] The south wind. Pope. [ 1913 Webster ]

[ F. austère, L. austerus, fr. Gr. &unr_;, fr. &unr_; to parch, dry. Cf. Sear. ] 1. Sour and astringent; rough to the state; having acerbity; as, an austere crab apple; austere wine. [ 1913 Webster ]

2. Severe in modes of judging, or living, or acting; rigid; rigorous; stern; as, an austere man, look, life. [ 1913 Webster ]

From whom the austere Etrurian virtue rose. Dryden. [ 1913 Webster ]

3. Unadorned; unembellished; severely simple. [ 1913 Webster ]

Syn. -- Harsh; sour; rough; rigid; stern; severe; rigorous; strict. [ 1913 Webster ]

adv. Severely; rigidly; sternly. [ 1913 Webster ]

A doctrine austerely logical. Macaulay. [ 1913 Webster ]

n. 1. Harshness or astringent sourness to the taste; acerbity. Johnson. [ 1913 Webster ]

2. Severity; strictness; austerity. Shak. [ 1913 Webster ]

n.; pl. Austerities [ F. austérité, L. austerias, fr. austerus. See Austere. ] 1. Sourness and harshness to the taste. [ Obs. ] Horsley. [ 1913 Webster ]

2. Severity of manners or life; extreme rigor or strictness; harsh discipline. [ 1913 Webster ]

The austerity of John the Baptist. Milton. [ 1913 Webster ]

3. Plainness; freedom from adornment; severe simplicity. [ 1913 Webster ]

Partly owing to the studied austerity of her dress, and partly to the lack of demonstration in her manners. Hawthorne. [ 1913 Webster ]

n. a decisive battle during the Napoleonic campaigns (1805); the French under Napoleon defeated the Russian and Austrian armies of Czar Alexander I and Emperor Francis II.
Syn. -- battle of Austerlitz. [ WordNet 1.5 ]

a. Augustinian; as, Austin friars. [ 1913 Webster ]

a. [ L. australis, fr. auster: cf. F. austral. ] 1. Southern; lying or being in the south; as, austral land; austral ocean. [ 1913 Webster ]

2. (Biogeography) Designating, or pertaining to, a zone extending across North America between the Transition and Tropical zones, and including most of the United States and central Mexico except the mountainous parts. [ Webster 1913 Suppl. ]

Austral signs (Astron.), the last six signs of the zodiac, or those south of the equator. [ 1913 Webster ]

a. Of or pertaining to Australasia; as, Australasian regions. -- n. A native or an inhabitant of Australasia. [ 1913 Webster ]

a. [ From L. Terra Australis southern land. ] Of or pertaining to Australia. -- n. A native or an inhabitant of Australia. [ 1913 Webster ]

. (Law) A system of balloting or voting in public elections, originally used in South Australia, in which there is such an arrangement for polling votes that secrecy is compulsorily maintained, and the ballot used is an official ballot printed and distributed by the government. [ Webster 1913 Suppl. ]

v. i. [ See Austral. ] To tend toward the south pole, as a magnet. [ Obs. ] [ 1913 Webster ]

They [ magnets ] do septentrionate at one extreme, and australize at another. Sir T. Browne. [ 1913 Webster ]

n. 1. any of several extinct humanlike small-brained bipedal primates of the genus Australopithecus; they existed from 1 to 4 million years ago. [ WordNet 1.5 ]

adj. 1. of or pertaining to the genus Australopithecus. [ WordNet 1.5 ]

a. Of or pertaining to Austria, or to its inhabitants. -- n. A native or an inhabitant of Austria. [ 1913 Webster ]

n. [ L. austrinus, from auster south. ] Southern; southerly; austral. [ Obs. ] Bailey. [ 1913 Webster ]

n. 1. 1 a genus having but one species; formerly included in genus Libocedrus.
Syn. -- genus Austrocedrus. [ WordNet 1.5 ]

a. Of or pertaining to the monarchy composed of Austria and Hungary. [ 1913 Webster ]

n. [ L. auster south wind + -mancy. ] Soothsaying, or prediction of events, from observation of the winds. [ 1913 Webster ]

n. 1. the area comprising the islands of central and S Pacific (Indonesia and Melanesia and Micronesia and Polynesia). [ WordNet 1.5 ]

adj. 1. of or pertaining to Austronesia. [ WordNet 1.5 ]

n. 1. 1 a genus having but one species; the New Caledonian yew.
Syn. -- genus Austrotaxus. [ WordNet 1.5 ]

n. [ L. balaustium, Gr. balay`stion. ] (Bot.) The pomegranate tree (Punica granatum). The bark of the root, the rind of the fruit, and the flowers are used medicinally. [ 1913 Webster ]

a. [ Pref. cata + caustic. ] (Physics) Relating to, or having the properties of, a caustic curve formed by reflection. See Caustic, a. Nichol. [ 1913 Webster ]

n. (Physics) A caustic curve formed by reflection of light. Nichol. [ 1913 Webster ]

n. [ L. causticum (sc. medicamentum). See Caustic, a. ] 1. Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic. [ 1913 Webster ]

2. (Optics) A caustic curve or caustic surface. [ 1913 Webster ]

{ } a. [ L. caustucs, Ge. &unr_;, fr. &unr_; to burn. Cf. Calm, Ink. ] 1. Capable of destroying the texture of anything or eating away its substance by chemical action; burning; corrosive; searing. [ 1913 Webster ]

2. Severe; satirical; sharp; as, a caustic remark. [ 1913 Webster ]

Caustic curve (Optics), a curve to which the ray of light, reflected or refracted by another curve, are tangents, the reflecting or refracting curve and the luminous point being in one plane. --
Caustic lime. See under Lime. --
Caustic potash,
Caustic soda (Chem.), the solid hydroxides potash, KOH, and soda, NaOH, or solutions of the same. --
Caustic silver, nitrate of silver, lunar caustic. --
Caustic surface (Optics), a surface to which rays reflected or refracted by another surface are tangents. Caustic curves and surfaces are called catacaustic when formed by reflection, and diacaustic when formed by refraction.

Syn. -- Stinging; cutting; pungent; searching. [ 1913 Webster ]

adv. In a caustic manner. [ 1913 Webster ]

n. 1. The quality of being caustic; corrosiveness; as, the causticity of potash. [ 1913 Webster ]

2. Severity of language; sarcasm; as, the causticity of a reply or remark. [ 1913 Webster ]

n. The quality of being caustic; causticity. [ 1913 Webster ]

a. [ F., fr. LL. claustralis, fr. L. claustrum. See Cloister. ] Cloistral. Ayliffe [ 1913 Webster ]

‖n.; pl. Claustra. [ L., a bolt or bar. ] (Anat.) A thin lamina of gray matter in each cerebral hemisphere of the brain of man. -- Claus"tral, a. [1913 Webster]

n. a genus of large finches.
Syn. -- genus Coccothraustes. [ WordNet 1.5 ]

a. [ Pref. dia- + caustic. ] (Opt.) Pertaining to, or possessing the properties of, a species of caustic curves formed by refraction. See Caustic surface, under Caustic. [ 1913 Webster ]

n. 1. (Med.) That which burns by refraction, as a double convex lens, or the sun's rays concentrated by such a lens, sometimes used as a cautery. [ 1913 Webster ]

2. (Math.) A curved formed by the consecutive intersections of rays of light refracted through a lens.

a. [ L. encausticus, Gr. &unr_;, fr. &unr_; to burn in; &unr_; in + &unr_; to burn: cf. F. encaustique. See Caustic, and cf. Ink. ] (Fine Arts) Prepared by means of heat; burned in. [ 1913 Webster ]

Encaustic painting (Fine Arts), painting by means of wax with which the colors are combined, and which is afterwards fused with hot irons, thus fixing the colors. --
Encaustic tile (Fine Arts), an earthenware tile which has a decorative pattern and is not wholly of one color. [ 1913 Webster ]

n. [ L. encaustica, Gr. &unr_; (sc. &unr_;): cf. F. encaustique. See Encaustic, a. ] The method of painting in heated wax, or in any way where heat is used to fix the colors. [ 1913 Webster ]

v. t. [ imp. & p. p. Exhausted; p. pr. & vb. n. Exhausting. ] [ L. exhaustus, p. p. of exhaurire; ex out + haurire, haustum, to draw, esp. water; perhaps akin to Icel. asua to sprinkle, pump. ] 1. To draw or let out wholly; to drain off completely; as, to exhaust the water of a well; the moisture of the earth is exhausted by evaporation. [ 1913 Webster ]

2. To empty by drawing or letting out the contents; as, to exhaust a well, or a treasury. [ 1913 Webster ]

3. To drain, metaphorically; to use or expend wholly, or till the supply comes to an end; to deprive wholly of strength; to use up; to weary or tire out; to wear out; as, to exhaust one's strength, patience, or resources. [ 1913 Webster ]

A decrepit, exhausted old man at fifty-five. Motley. [ 1913 Webster ]

4. To bring out or develop completely; to discuss thoroughly; as, to exhaust a subject. [ 1913 Webster ]

5. (Chem.) To subject to the action of various solvents in order to remove all soluble substances or extractives; as, to exhaust a drug successively with water, alcohol, and ether. [ 1913 Webster ]

Exhausted receiver. (Physics) See under Receiver.

Syn. -- To spend; consume; tire out; weary. [ 1913 Webster ]

a. [ L. exhaustus, p. p. ] 1. Drained; exhausted; having expended or lost its energy. [ 1913 Webster ]

2. Pertaining to steam, air, gas, etc., that is released from the cylinder of an engine after having preformed its work. [ 1913 Webster ]

Exhaust draught, a forced draught produced by drawing air through a place, as through a furnace, instead of blowing it through. --
Exhaust fan, a fan blower so arranged as to produce an exhaust draught, or to draw air or gas out of a place, as out of a room in ventilating it. --
Exhaust nozzle,
Exhaust orifice (Steam Engine), the blast orifice or nozzle. --
Exhaust pipe (Steam Engine), the pipe that conveys exhaust steam from the cylinder to the atmosphere or to the condenser.
Exhaust port (Steam Engine), the opening, in the cylinder or valve, by which the exhaust steam escapes. --
Exhaust purifier (Milling), a machine for sorting grains, or purifying middlings by an exhaust draught. Knight. --
Exhaust steam (Steam Engine), steam which is allowed to escape from the cylinder after having been employed to produce motion of the piston. --
Exhaust valve (Steam Engine), a valve that lets exhaust steam escape out of a cylinder. [ 1913 Webster ]

n. (Steam Engine) 1. The steam let out of a cylinder after it has done its work there. [ 1913 Webster ]

2. The foul air let out of a room through a register or pipe provided for the purpose. [ 1913 Webster ]

adj. 1. same as burned-out, 1. [ wns=1+3 ]
Syn. -- burned-out(prenominal), burnt-out(prenominal), burned out(predicate), burnt out(predicate), fagged, fatigued, played-out(prenominal), played out(predicate), spent, washed-out(prenominal), washed out(predicate), worn-out(prenominal), worn out(predicate). [ WordNet 1.5 ]

2. used up; completely consumed. [ wns=2 ][ Narrower terms: gone, expended, spent ] WordNet 1.5 +PJC ]

3. emptied by being pumped out or having a vacuum created. Opposite of unexhausted.
Syn. -- exhausted, evacuated. [ WordNet 1.5 +PJC ]

pos>n. One who, or that which, exhausts or draws out. [ 1913 Webster ]

n. Capability of being exhausted. [ 1913 Webster ]

I was seriously tormented by the thought of the exhaustibility of musical combinations. J. S. Mill. [ 1913 Webster ]

a. Capable of being exhausted, drained off, or expended. Opposite of inexhaustible. Johnson. [ 1913 Webster +PJC ]

a. Producing exhaustion; as, exhausting labors. -- Ex*haust"ing, adv. [1913 Webster]

n. [ Cf. F. exhaustion. ] 1. The act of draining out or draining off; the act of emptying completely of the contents. [ 1913 Webster ]

2. The state of being exhausted or emptied; the state of being deprived of strength or spirits. [ 1913 Webster ]

3. (Math.) An ancient geometrical method in which an exhaustive process was employed. It was nearly equivalent to the modern method of limits. [ 1913 Webster ]

☞ The method of exhaustions was applied to great variety of propositions, pertaining to rectifications and quadratures, now investigated by the calculus. [ 1913 Webster ]