Trachitis Tra·chi"tis noun [ New Latin ] (Medicine) Tracheitis.

Trachoma Tra·cho"ma noun [ New Latin , from Greek ... roughness, from ... rough.] (Medicine) Granular conjunctivitis due to a specific micrococcus. -- Tra*chom"a*tous adjective

Trachycarpous Tra`chy·car"pous adjective [ Greek ... rough + ... fruit.] (Botany) Rough-fruited. Gray.

Trachymedusæ Tra`chy·me·du"sæ noun plural [ New Latin , from Greek ... rough + medusa .] (Zoology) A division of acalephs in which the development is direct from the eggs, without a hydroid stage. Some of the species are parasitic on other medusæ.

Trachyspermous Tra`chy·sper"mous adjective [ Greek ... rough + ... seed.] (Botany) Rough-seeded. Gray.

Trachystomata Tra`chy·stom"a·ta noun plural [ New Latin , from Greek ... rough + stoma .] (Zoology) An order of tailed aquatic amphibians, including Siren and Pseudobranchus . They have anterior legs only, are eel-like in form, and have no teeth except a small patch on the palate. The external gills are persistent through life.

Trachyte Tra"chyte noun [ Greek ... rough, rugged: cg. French trachyte .] (Geol.) An igneous rock, usually light gray in color and breaking with a rough surface. It consists chiefly of orthoclase feldspar with sometimes hornblende and mica.

Trachytic Tra·chyt"ic adjective [ Confer French trachytique .] Of, pertaining to, or resembling, trachyte.

Trachytoid Trach"y·toid adjective [ Trachyte + - oid .] (Min.) Resembling trachyte; -- used to define the structure of certain rocks.

Tracing Tra"cing noun 1. The act of one who traces; especially, the act of copying by marking on thin paper, or other transparent substance, the lines of a pattern placed beneath; also, the copy thus producted.

2. A regular path or track; a course.

Tracing cloth , Tracing paper , specially prepared transparent cloth or paper, which enables a drawing or print to be clearly seen through it, and so allows the use of a pen or pencil to produce a facsimile by following the lines of the original placed beneath.

Track Track noun [ Old French trac track of horses, mules, trace of animals; of Teutonic origin; confer Dutch trek a drawing, trekken to draw, travel, march, Middle High German trechen , pret. trach . Confer Trick .] 1. A mark left by something that has passed along; as, the track , or wake, of a ship; the track of a meteor; the track of a sled or a wheel.

The bright track of his fiery car.

Shak.

2. A mark or impression left by the foot, either of man or beast; trace; vestige; footprint.

Far from track of men.

Milton.

3. (Zoology) The entire lower surface of the foot; -- said of birds, etc.

4. A road; a beaten path.

Behold Torquatus the same track pursue.

Dryden.

5. Course; way; as, the track of a comet.

6. A path or course laid out for a race, for exercise, etc.

7. (Railroad) The permanent way; the rails.

8. [ Perhaps a mistake for tract .] A tract or area, as of land. [ Obsolete] "Small tracks of ground." Fuller.

Track scale , a railway scale. See under Railway .

Track Track transitive verb [ imperfect & past participle tracked ; present participle & verbal noun tracking .] To follow the tracks or traces of; to pursue by following the marks of the feet; to trace; to trail; as, to track a deer in the snow.

It was often found impossible to track the robbers to their retreats among the hills and morasses.

Macaulay.

2. (Nautical) To draw along continuously, as a vessel, by a line, men or animals on shore being the motive power; to tow.

Track-road Track"-road` noun A towing path.

Trackage Track"age noun The act of tracking, or towing, as a boat; towage.

Trackage Track"age noun (Railroads) Lines of track, collectively; as, an extensive trackage .

Tracker Track"er noun 1. One who, or that which, tracks or pursues, as a man or dog that follows game.

And of the trackers of the deer
Scarce half the lessening pack was near.

Sir W. Scott.

2. (Mus.) In the organ, a light strip of wood connecting (in path) a key and a pallet, to communicate motion by pulling.

Tracklayer Track"lay`er noun (Railroads) Any workman engaged in work involved in putting the track in place. [ U. S. & Canada] -- Track"lay`ing , noun

Trackless Track"less adjective Having no track; marked by no footsteps; untrodden; as, a trackless desert.

To climb the trackless mountain all unseen.

Byron.

-- Track"less*ly , adverb - Track"less*ness , noun

Trackman Track"man noun ; plural - men (Railroads) One employed on work on the track; specif., a trackwalker.

Trackmaster Track"mas`ter noun (Railroad) One who has charge of the track; -- called also roadmaster .

Trackscout Track"scout noun See Trackschuyt .

Trackwalker Track"walk`er noun (Railroads) A person employed to walk over and inspect a section of tracks.

Trackway Track"way` noun Any of two or more narrow paths, of steel, smooth stone, or the like, laid in a public roadway otherwise formed of an inferior pavement, as cobblestones, to provide an easy way for wheels.

Tract Tract noun [ Abbrev.fr. tractate .] A written discourse or dissertation, generally of short extent; a short treatise, especially on practical religion.

The church clergy at that time writ the best collection of tracts against popery that ever appeared.

Swift.

Tracts for the Times . See Tractarian .

Tract Tract noun [ Latin tractus a drawing, train, track, course, tract of land, from trahere tractum , to draw. Senses 4 and 5 are perhaps due to confusion with track . See Trace , v. , and confer Tratt .] 1. Something drawn out or extended; expanse. "The deep tract of hell." Milton.

2. A region or quantity of land or water, of indefinite extent; an area; as, an unexplored tract of sea.

A very high mountain joined to the mainland by a narrow tract of earth.

Addison.

3. Traits; features; lineaments. [ Obsolete]

The discovery of a man's self by the tracts of his countenance is a great weakness.

Bacon.

4. The footprint of a wild beast. [ Obsolete] Dryden.

5. Track; trace. [ Obsolete]

Efface all tract of its traduction.

Sir T. Browne.

But flies an eagle flight, bold, and forthon,
Leaving no tract behind.

Shak.

6. Treatment; exposition. [ Obsolete] Shak.

7. Continuity or extension of anything; as, the tract of speech. [ Obsolete] Older.

8. Continued or protracted duration; length; extent. "Improved by tract of time." Milton.

9. (R. C. Ch.) Verses of Scripture sung at Mass, instead of the Alleluia, from Septuagesima Sunday till the Saturday befor Easter; -- so called because sung tractim , or without a break, by one voice, instead of by many as in the antiphons.

Syn. -- Region; district; quarter; essay; treatise; dissertation.

Tract Tract transitive verb To trace out; to track; also, to draw out; to protact. [ Obsolete] Spenser. B. Jonson.

Tractability Tract`a·bil"i·ty noun [ Latin tractabilitas : confer French tractabilite .] The quality or state of being tractable or docile; docility; tractableness.

Tractable Tract"a·ble adjective [ Latin tractabilis , fr, tractare to draw violently, to handle, treat. See Treat , transitive verb ] 1. Capable of being easily led, taught, or managed; docile; manageable; governable; as, tractable children; a tractable learner.

I shall find them tractable enough.

Shak.

2. Capable of being handled; palpable; practicable; feasible; as, tractable measures. [ Obsolete] Holder.

-- Tract"a*ble*ness , noun -- Tract"a/bly , adverb

Tractarian Trac·ta"ri·an noun (Ch. of England) One of the writers of the Oxford tracts, called " Tracts for the Times," issued during the period 1833-1841, in which series of papers the sacramental system and authority of the Church, and the value of tradition, were brought into prominence. Also, a member of the High Church party, holding generally the principles of the Tractarian writers; a Puseyite.

Tractarian Trac·ta"ri·an adjective Of or pertaining to the Tractarians, or their principles.

Tractarianism Trac·ta"ri·an·ism noun (Ch. of England) The principles of the Tractarians, or of those persons accepting the teachings of the "Tracts for the Times."

Tractate Tract"ate noun [ Latin tractatus a touching, handling, treatise. See Tractable, and Tract a treatise, Treaty .] A treatise; a tract; an essay.

Agreeing in substance with Augustin's, from whose fourteenth Tractate on St. John the words are translated.

Hare.

Tractation Trac·ta"tion noun [ Latin tractatio .] Treatment or handling of a subject; discussion. [ Obsolete]

A full tractation of the points controverted.

Bp. Hall.

Tractator Trac·ta"tor noun [ Latin , a handler.] One who writes tracts; specif., a Tractarian. [ R.] C. Kingsley.

Tract"ile adjective [ Latin trahere , tractum , to draw.] Capable of being drawn out in length; ductile. Bacon.

Tractility Trac·til"i·ty noun The quality of being tractile; ductility. Derham.

Traction Trac"tion noun [ Latin trahere , tractum , to draw: confer French traction .] 1. The act of drawing, or the state of being drawn; as, the traction of a muscle.

2. Specifically, the act of drawing a body along a plane by motive power, as the drawing of a carriage by men or horses, the towing of a boat by a tug.

3. Attraction; a drawing toward. [ R.]

4. The adhesive friction of a wheel on a rail, a rope on a pulley, or the like. Knight.

Angle of traction (Mech.) , the angle made with a given plane by the line of direction in which a tractive force acts. -- Traction engine , a locomotive for drawing vehicles on highways or in the fields.

Traction wheel Traction wheel (Machinery) (a) A locomotive driving wheel which acts by friction adhesion to a smooth track. (b) A smooth-rimmed friction wheel for giving motion to an endless link belt or the like.

Tractional Trac"tion·al adjective Of or relating to traction.

Tractite Tract"ite noun A Tractarian.

Tractitious Trac·ti"tious adjective [ See Tractate .] Treating of; handling. [ R.]

Tractive Tract"ive adjective Serving to draw; pulling; attracting; as, tractive power.

Tractor Tract"or noun [ New Latin , from Latin trahere , tractum , to draw.] 1. That which draws, or is used for drawing.

2. plural (Medicine) Two small, pointed rods of metal, formerly used in the treatment called Perkinism.

Tractor Tract"or noun An aëroplane flying machine having one or more tractor screws.

Tractor screw, propeller Tractor screw, propeller (Aviation) A propeller screw placed in front of the supporting planes of an aëroplane instead of behind them, so that it exerts a pull instead of a push. Hence, Tractor monoplane , Tractor biplane , etc.

Tractoration Trac`to·ra"tion noun See Perkinism .

Tractory Tract"o·ry noun [ Latin tractorius of drawing, from trahere , tractum , to draw.] (Geom.) A tractrix.

Tractrix Tract"rix noun [ New Latin See Tractor .] (Geom.) A curve such that the part of the tangent between the point of tangency and a given straight line is constant; -- so called because it was conceived as described by the motion of one end of a tangent line as the other end was drawn along the given line.

Trad Trad obsolete imperfect of Tread . Chaucer.

Trade Trade noun [ Formerly, a path, Middle English tred a footmark. See Tread , noun & v. ] 1. A track; a trail; a way; a path; also, passage; travel; resort. [ Obsolete]

A postern with a blind wicket there was,
A common trade to pass through Priam's house.

Surrey.

Hath tracted forth some salvage beastes trade .

Spenser.

Or, I'll be buried in the king's highway,
Some way of common trade , where subjects' feet
May hourly trample on their sovereign's head.

Shak.

2. Course; custom; practice; occupation; employment. [ Obsolete] "The right trade of religion." Udall.

There those five sisters had continual trade .

Spenser.

Long did I love this lady,
Long was my travel, long my trade to win her.

Massinger.

Thy sin's not accidental but a trade .

Shak.

3. Business of any kind; matter of mutual consideration; affair; dealing. [ Obsolete]

Have you any further trade with us?

Shak.

4. Specifically: The act or business of exchanging commodities by barter, or by buying and selling for money; commerce; traffic; barter.

» Trade comprehends every species of exchange or dealing, either in the produce of land, in manufactures, in bills, or in money; but it is chiefly used to denote the barter or purchase and sale of goods, wares, and merchandise, either by wholesale or retail. Trade is either foreign or domestic . Foreign trade consists in the exportation and importation of goods, or the exchange of the commodities of different countries. Domestic , or home , trade is the exchange, or buying and selling, of goods within a country. Trade is also by the wholesale , that is, by the package or in large quantities, generally to be sold again, or it is by retail , or in small parcels. The carrying trade is the business of transporting commodities from one country to another, or between places in the same country, by land or water.

5. The business which a person has learned, and which he engages in, for procuring subsistence, or for profit; occupation; especially, mechanical employment as distinguished from the liberal arts, the learned professions, and agriculture; as, we speak of the trade of a smith, of a carpenter, or mason, but not now of the trade of a farmer, or a lawyer, or a physician.

Accursed usury was all his trade .

Spenser.

The homely, slighted, shepherd's trade .

Milton.

I will instruct thee in my trade .

Shak.

6. Instruments of any occupation. [ Obsolete]

The house and household goods, his trade of war.

Dryden.

7. A company of men engaged in the same occupation; thus, booksellers and publishers speak of the customs of the trade , and are collectively designated as the trade .

8. plural The trade winds.

9. Refuse or rubbish from a mine. [ Prov. Eng.]

Syn. -- Profession; occupation; office; calling; avocation; employment; commerce; dealing; traffic.

Board of trade . See under Board . -- Trade dollar . See under Dollar . -- Trade price , the price at which goods are sold to members of the same trade, or by wholesale dealers to retailers. -- Trade sale , an auction by and for the trade, especially that of the booksellers. -- Trade wind , a wind in the torrid zone, and often a little beyond at, which blows from the same quarter throughout the year, except when affected by local causes; -- so called because of its usefulness to navigators, and hence to trade.

» The general direction of the trade winds is from N. E. to S. W. on the north side of the equator, and from S. E. to N. W. on the south side of the equator. They are produced by the joint effect of the rotation of the earth and the movement of the air from the polar toward the equatorial regions, to supply the vacancy caused by heating, rarefaction, and consequent ascent of the air in the latter regions. The trade winds are principally limited to two belts in the tropical regions, one on each side of the equator, and separated by a belt which is characterized by calms or variable weather.

Trade Trade intransitive verb [ imperfect & past participle Traded ; present participle & verbal noun Trading .] 1. To barter, or to buy and sell; to be engaged in the exchange, purchase, or sale of goods, wares, merchandise, or anything else; to traffic; to bargain; to carry on commerce as a business.

A free port, where nations . . . resorted with their goods and traded .

Arbuthnot.

2. To buy and sell or exchange property in a single instance.

3. To have dealings; to be concerned or associated; -- usually followed by with .

How did you dare to trade and traffic with Macbeth?

Shak.

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