Having, or composed of, four sides.

In a tetrahedral manner.

A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a considerable presentage of silver. Called also gray copper ore, fahlore, and panabase.

A solid figure inclosed or bounded by four triangles.

Pertaining to a tetrahexahedron.

A solid in the isometric system, bounded by twenty-four equal triangular faces, four corresponding to each face of the cube.

A chemical substance (C21H20O2) which is produced by the hemp plant (Cannabis sativa), and is the physiologically active agent of dried preparations of that plant, called variously marijuana, hashish, ganja, hemp, etc.; also called THC. It causes the euphoric effect for which the preparations are smoked or chewed. It is used in medicine in a purified form as an antiemetic (an antinausea agent), especially in conjunction with chemotherapy of cancer. It occurs primarily as the /1-3,4-trans isomer, also called /9-THC, with small amounts of the /6-3,4-trans isomer detectable at about 1%. It is a controlled substance, classified as a hallucinogen, and its possession or distribution is illegal in almost all states of the United States.

A tetrahexahedron.

A hydrocarbon, C24H50, resembling paraffin, and like it belonging to the marsh-gas series; -- so called from having twenty-four atoms of carbon in the molecule.

A group or series of four dramatic pieces, three tragedies and one satyric, or comic, piece (or sometimes four tragedies), represented consequently on the Attic stage at the Dionysiac festival.

A division of Coleoptera having, apparently, only four tarsal joints, one joint being rudimentary.

Having the parts arranged in sets of four; as, a tetramerous flower.

A verse or line consisting of four measures, that is, in iambic, trochaic, and anapestic verse, of eight feet; in other kinds of verse, of four feet.

A hypothetical hydrocarbon, C4H8, analogous to trimethylene, and regarded as the base of well-known series or derivatives. Sometimes, an isomeric radical used to designate certain compounds which are really related to butylene.

The union of the four attributes of the Evangelists in one figure, which is represented as winged, and standing on winged fiery wheels, the wings being covered with eyes. The representations of it are evidently suggested by the vision of Ezekiel (ch. i.)

A Linnaean class of plants having four stamens.

Belonging to the class Tetrandria.

A bird belonging to the tribe of which the genus Tetrao is the type, as the grouse, partridge, quail, and the like. Used also adjectively.

Containing four distinct petals, or flower leaves; as, a tetrapetalous corolla.

A combination of wax, resin, lard, and pitch, composing an ointment.

Furfuran.

Having four leaves; consisting of four distinct leaves or leaflets.

A Bible consisting of four different Greek versions arranged in four columns by Origen; hence, any version in four languages or four columns.

A division of Arachnida including those spiders which have four lungs, or pulmonary sacs. It includes the bird spiders (Mygale) and the trapdoor spiders. See Mygale.

One of the Tetrapneumona.

An insect characterized by having but four perfect legs, as certain of the butterflies.

A set of four feet; a measure or distance of four feet.

An insect having four wings.

Having four wings.

A noun that has four cases only.

Four.

A tetrarchy.

Of or pertaining to a tetrarch or tetrarchy.

The district under a Roman tetrarch; the office or jurisdiction of a tetrarch; a tetrarchate.

Characterized by division into four parts.

Having four sepals.

A machine in which four pulleys act together.

Having four seeds.

A nonsexual spore, one of a group of four regularly occurring in red seaweeds.

A stanza, epigram, or poem, consisting of four verses or lines.

Having four columns in front; -- said of a temple, portico, or colonnade. A tetrastyle building.

Consisting of, or having, four syllables; quadrisyllabic.

A word consisting of four syllables; a quadrisyllable.

Having four loculaments, or thecae.

A salt of tetrathionic acid.

Of, pertaining to, or designating, a thionic derivative, H2S4O6, of sulphuric acid, obtained as a colorless, odorless liquid.

Consisting of four atoms; having four atoms in the molecule, as phosphorus and arsenic. Having a valence of four; quadrivalent; tetravalent; sometimes, in a specific sense, having four hydroxyl groups, whether acid or basic.

The quality or state of being tetravalent; quadrivalence.

Having a valence of four; tetratomic; quadrivalent.

Having four branches diverging at right angles; -- said of certain spicules of sponges.

A combining form (also used adjectively), designating any one of a series of double derivatives of the azo and diazo compounds containing four atoms of nitrogen.

A crystalline acid substance, CH2N4, which may be regarded as pyrrol in which nitrogen atoms replace three CH groups; also, any of various derivatives of the same.

Any one of a certain series of basic compounds containing a chain of four nitrogen atoms; for example, ethyl tetrazone, (C2H5)2N.N2.N(C2H5)2, a colorless liquid having an odor of leeks.

Forward; perverse; harsh; sour; rugged.

Crabbedness; perverseness.

Tetric.

Of, pertaining to, or designating, a complex ketonic acid, C5H6O3, obtained as a white crystalline substance; -- so called because once supposed to contain a peculiar radical of four carbon atoms. Called also acetyl-acrylic acid.

Any one of numerous species of plectognath fishes belonging to Tetrodon and allied genera. Each jaw is furnished with two large, thick, beaklike, bony teeth.

Of or pertaining to the tetrodons. A tetrodon.

A hypothetical hydrocarbon, C4H4, analogous to benzene; -- so called from the four carbon atoms in the molecule.

A monosaccharide derived from a certain alcohol.

An oxide having four atoms of oxygen in the molecule; a quadroxide; as, osmium tetroxide, OsO4.

Butyl; -- so called from the four carbon atoms in the molecule.

Butylene; -- so called from the four carbon atoms in the molecule.

To affect with tetter.

A certain game of children; seesaw; -- called also titter-totter, and titter-cum-totter.

Having the character of, or pertaining to, tetter.

A plant used as a remedy for tetter, -- in England the calendine, in America the bloodroot.

Any one of numerous species of Hemiptera belonging to Tettigonia and allied genera; a leaf hopper.

Captious; testy.

The cicada.

Testy; irritable.

The lapwing; -- called also teuchit.

The redshank.

One of an ancient German tribe; later, a name applied to any member of the Germanic race in Europe; now used to designate a German, Dutchman, Scandinavian, etc., in distinction from a Celt or one of a Latin race.

The language of the ancient Germans; the Teutonic languages, collectively.

A mode of speech peculiar to the Teutons; a Teutonic idiom, phrase, or expression; a Teutonic mode or custom; a Germanism.

A rope or chain for towing a boat; also, a cord; a string.

A tribe of American Indians including many of the Pueblos of New Mexico and adjacent regions.

Fatigued; worn with labor or hardship.

A pipe, funnel, or chimney, as for smoke.

The lapwing; -- called also teewheep.

To beat; to break, as flax or hemp.

A structure on the hurricane deck of a steamer, containing the pilot house, officers' cabins, etc.

To write in large characters, as in text hand.

A book with wide spaces between the lines, to give room for notes.

A large hand in writing; -- so called because it was the practice to write the text of a book in a large hand and the notes in a smaller hand.

That which is, or may be, woven; a fabric made by weaving.

One ready in quoting texts.

Of or pertaining to weaving.

Of or pertaining to weaving, textorial; as, the textrine art.

Of, pertaining to, or contained in, the text; as, textual criticism; a textual reading.

A textman; a textuary.

In a textual manner; in the text or body of a work; in accordance with the text.

A textuary.

One who is well versed in the Scriptures; a textman.

Textual.

A textualist; a textman.

Of or pertaining to texture.

To form a texture of or with; to interweave.

The art or process of weaving; texture.

A thin plate of metal.

Of or pertaining to the Thai language, a member of the Tai group of languages.

To thwack.

The segment of the brain next in front of the midbrain, including the thalami, pineal gland, and pituitary body; the diencephalon; the interbrain.

Of or pertaining to a thalamus or to thalami.

Bearing the stamens directly on the receptacle; -- said of a subclass of polypetalous dicotyledonous plants in the system of De Candolle.

The cavity or ventricle of the thalamencephalon; the third ventricle.

Same as Foraminifera.

A mass of nervous matter on either side of the third ventricle of the brain; -- called also optic thalamus.

Any sea tortoise.

Of or pertaining to the sea; -- sometimes applied to rocks formed from sediments deposited upon the sea bottom.

Any species of Thalassinidae, a family of burrowing macrurous Crustacea, having a long and soft abdomen.

The study or science of the life of marine organisms.

A former German silver coin worth about three shillings sterling, or about 73 cents, around 1900.

That one of the nine Muses who presided over comedy. One of the three Graces. One of the Nereids.

A division of Tunicata comprising the free-swimming species, such as Salpa and Doliolum.

Of or pertaining to Thalia; hence, of or pertaining to comedy; comic.

A salt of a hypothetical thallic acid.

A hydrocarbon obtained from coal-tar residues, and remarkable for its intense yellowish green fluorescence.