A tank containing pipes through which circulates steam, water, air, or the like, for heating or cooling; -- used in some heating and ventilation systems.

Pertaining to, or connected with, the regulation of temperature in the animal body; as, the thermotaxic nervous system.

The property possessed by protoplasm of moving under the influence of heat. Determination of the direction of locomotion by heat.

Pertaining to the variation of tensile strength with the temperature.

A process of increasing the strength of wrought iron by heating it to a determinate temperature, and giving to it, while in that state, a mechanical strain or tension in the direction in which the strength is afterward to be exerted.

Treatment of disease by heat, esp. by hot air.

Of or pertaining to heat; produced by heat; as, thermotical phenomena.

The science of heat.

A condition of tonicity with respect to temperature.

Manifesting thermotropism.

The phenomenon of turning towards a source of warmth, seen in the growing parts of some plants.

A picture (as of a slice of wood) obtained by first wetting the object slightly with hydrochloric or dilute sulphuric acid, then taking an impression with a press, and next strongly heating this impression.

The art or process of obtaining thermotypes.

Of or relating to heat and electricity; especially, relating to thermal effects produced by voltaic action.

Resembling a beast in nature or habit; marked by animal characteristics; as, theroid idiocy.

See Theriodonta.

An order of carnivorous dinosaurs in which the feet are less birdlike, and hence more like those of an ordinary quadruped, than in the Ornithopoda. It includes the rapacious genera Megalosaurus, Creosaurus, and their allies.

A treasury or storehouse; hence, a repository, especially of knowledge; -- often applied to a comprehensive work, like a dictionary or cyclopedia.

The plural of this. See This.

A little or subordinate thesis; a proposition.

A position or proposition which a person advances and offers to maintain, or which is actually maintained by argument.

A lawgiver; a legislator; one of the six junior archons at Athens.

Of or pertaining to Thespis; hence, relating to the drama; dramatic; as, the Thespian art. An actor.

Of or pertaining to Thessaly in Greece. A native or inhabitant of Thessaly.

Of or pertaining to Thessalonica, a city of Macedonia. A native or inhabitant of Thessalonica.

A letter of the Greek alphabet corresponding to th in English; -- sometimes called the unlucky letter, from being used by the judges on their ballots in passing condemnation on a prisoner, it being the first letter of the Greek qa`natos, death.

Laid down; absolute or positive, as a law.

Any one of a series of complex basic sulphur compounds analogous to the sulphines.

Of or pertaining to theurgy; magical.

One who pretends to, or is addicted to, theurgy.

A divine work; a miracle; hence, magic; sorcery.

Manner; custom; habit; form of behavior; qualities of mind; disposition; specifically, good qualities; virtues.

Furnished with thews or muscles; as, a well-thewed limb.

Having strong or large thews or muscles; muscular; sinewy; strong.

The plural of he, she, or it. They is never used adjectively, but always as a pronoun proper, and sometimes refers to persons without an antecedent expressed.

A weak nitrogenous sulphur base, C6H13NS2.

A colorless oily liquid, (C2H5)2S2, having a strong garlic odor; -- called also ethyl disulphide. By extension, any one of the series of related compounds.

Of or pertaining to Thibet. A native or inhabitant of Thibet.

Same as Thibetan.

A slice; a skimmer; a spatula; a pudding stick.

To thicken.

Having a thick skull; stupid.

A stone curlew. See under Stone.

Having a thick skin; hence, not sensitive; dull; obtuse.

Having a thick skull; hence, dull; heavy; stupid; slow to learn.

Affected with thick wind.

The bullfinch.

To become thick.

Something put into a liquid or mass to make it thicker.

A wood or a collection of trees, shrubs, etc., closely set; as, a ram caught in a thicket.

A thick-headed or stupid person.

Somewhat thick.

In a thick manner; deeply; closely.

The quality or state of being thick (in any of the senses of the adjective).

A close or thick hedge.

A coarse, gross person; a person void of sensibility or sinsitiveness; a dullard.

A dullard, or dull person; a blockhead; a numskull.

Thither.

Thitherward.

One who steals; one who commits theft or larceny. See Theft.

A ketone derivative of thiophene obtained as a white crystalline substance, (C4H3S)2.CO, by the action of aluminum chloride and carbonyl chloride on thiophene.

The hypothetical radical C4H3S., regarded as the essential residue of thiophene and certain of its derivatives.

To practice theft; to steal.

The practice of stealing; theft; thievishness.

Given to stealing; addicted to theft; as, a thievish boy, a thievish magpie.

The proximal segment of the hind limb between the knee and the trunk. See Femur.

Of or pertaining to thigmotaxis.

The property possessed by living protoplasm of contracting, and thus moving, when touched by a solid or fluid substance.

That same; this; that.

One of the two long pieces of wood, extending before a vehicle, between which a horse is hitched; a shaft.

The horse which goes between the thills, or shafts, and supports them; also, the last horse in a team; -- called also thill horse.

A kind of cap or cover, or sometimes a broad ring, for the end of the finger, used in sewing to protect the finger when pushing the needle through the material. It is usually made of metal, and has upon the outer surface numerous small pits to catch the head of the needle.

A kind of black raspberry (Rubus occidentalis), common in America.

The chub mackerel. See under Chub.

As much as a thimble will hold; a very small quantity.

To swindle by means of small cups or thimbles, and a pea or small ball placed under one of them and quickly shifted to another, the victim laying a wager that he knows under which cup it is; hence, to cheat by any trick.

One who cheats by thimblerigging, or tricks of legerdemain.

Any plant of the composite genus Rudbeckia, coarse herbs somewhat resembling the sunflower; -- so called from their conical receptacles.

To grow or become thin; -- used with some adverbs, as out, away, etc.; as, geological strata thin out, i. e., gradually diminish in thickness until they disappear.

Having a thin skin; hence, sensitive; irritable.

A form of the possessive case of the pronoun thou, now superseded in common discourse by your, the possessive of you, but maintaining a place in solemn discourse, in poetry, and in the usual language of the Friends, or Quakers.

Whatever exists, or is conceived to exist, as a separate entity, whether animate or inanimate; any separable or distinguishable object of thought.

Act of thinking; a thought.

Capable of being thought or conceived; cogitable.

One who thinks; especially and chiefly, one who thinks in a particular manner; as, a close thinker; a deep thinker; a coherent thinker.

The act of thinking; mode of thinking; imagination; cogitation; judgment.

In a thin manner; in a loose, scattered manner; scantily; not thickly; as, ground thinly planted with trees; a country thinly inhabited.

One who thins, or makes thinner.

The quality or state of being thin (in any of the senses of the word).

Somewhat thin.

A calcareous tufa, in part crystalline, occurring on a large scale as a shore deposit about the Quaternary lake basins of Nevada.

A sulphocarbonate.

Same as Sulphocarbonic.

Same as Sulphocyanate.

Same as Sulphocyanic.

A double benzene and thiophene nucleus, C8H6S, analogous to naphthalene, and like it the base of a large series of derivatives.

Of or pertaining to sulphur; containing or resembling sulphur; specifically, designating certain of the thio compounds; as, the thionic acids. Cf. Dithionic, Trithionic, Tetrathionic, etc.

An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet.

A red or violet dyestuff having a greenish metallic luster. It is produced artificially, by the chemical dehydration of thionine, as a brown amorphous powder.

A beautiful fluorescent crystalline substance, intermediate in composition between thionol and thionine.

The hypothetical radical SO, regarded as an essential constituent of certain sulphurous compounds; as, thionyl chloride.

A sulphur hydrocarbon, C4H4S, analogous to furfuran and benzene, and acting as the base of a large number of substances which closely resemble the corresponding aromatic derivatives.

Of, pertaining to, or derived from, thiophene; specifically, designating a certain acid analogous to benzoic acid.

A colorless mobile liquid, C6H5.SH, of an offensive odor, and analogous to phenol; -- called also phenyl sulphydrate.

A double thiophene nucleus, C6H4S2, analogous to thionaphthene, and the base of a large series of compounds.

A salt of thiosulphuric acid; -- formerly called hyposulphite.

Of, pertaining to, or designating, an unstable acid, H2S2O3, analogous to sulphuric acid, and formerly called hyposulphurous acid.

A colorless oily liquid, C4H3S.CH3, analogous to, and resembling, toluene; -- called also methyl thiophene.

Any one of three possible metameric substances, which are dimethyl derivatives of thiophene, like the xylenes from benzene.

The quotient of a unit divided by three; one of three equal parts into which anything is divided.

An under constable.

A third part of the profits of fines and penalties imposed at the country court, which was among the perquisites enjoyed by the earl.

The third part of the corn or grain growing on the ground at the tenant's death, due to the lord for a heriot, as within the manor of Turfat in Herefordshire.

In the third place.

To bore; to drill or thrill. See Thrill.

The right which the owner of a mill possesses, by contract or law, to compel the tenants of a certain district, or of his sucken, to bring all their grain to his mill for grinding.

To have a thirst for.

One who thirsts.

In a thirsty manner.

The state of being thirsty; thirst.