Thirty Thir"ty noun ; plural Thirties 1. The sum of three tens, or twenty and ten; thirty units or objects. 2. A symbol expressing thirty, as 30, or XXX.

Thirty-second Thir"ty-sec`ond adjective Being one of thirty-two equal parts into which anything is divided. Thirty-second note (Mus.) , the thirty- second part of a whole note; a demi-semiquaver.

This This (&thlig;ĭs) pron. & adjective ; plural These (&thlig;ēz). [ Middle English this , thes , Anglo-Saxon ðēs , masc., ðeós , fem., ðis , neut.; akin to Old Saxon these , Dutch deze , German dieser , Old High German diser , deser , Icelandic þessi ; originally from the definite article + a particle -se , -si ; confer Goth. sai behold. See The , That , and confer These , Those .] 1. As a demonstrative pronoun, this denotes something that is present or near in place or time, or something just mentioned, or that is just about to be mentioned.

When they heard this , they were pricked in their heart.

Acts ii. 37.

But know this , that if the good man of the house had known in what watch the thief would come, he would have watched.

Matt. xxiv. 43. 2. As an adjective, this has the same demonstrative force as the pronoun, but is followed by a noun; as, this book; this way to town. » This may be used as opposed or correlative to that , and sometimes as opposed to other or to a second this . See the Note under That , 1.

This way and that wavering sails they bend.

Pope.

A body of this or that denomination is produced.

Boyle.

Their judgment in this we may not, and in that we need not, follow.

Hooker.

Consider the arguments which the author had to write this , or to design the other , before you arraign him.

Dryden.

Thy crimes . . . soon by this or this will end.

Addison. » This , like a , every , that , etc., may refer to a number, as of years, persons, etc., taken collectively or as a whole.

This twenty years have I been with thee..

Gen. xxxi. 38.

I have not wept this years; but now
My mother comes afresh into my eyes.

Dryden.

Thistle This"tle noun [ Middle English thistil , Anglo-Saxon þistel ; akin to D. & German distel , Old High German distila , distil , Icelandic þistill , Swedish tistel , Danish tidsel ; of uncertain origin.] (Botany) Any one of several prickly composite plants, especially those of the genera Cnicus , Craduus , and Onopordon . The name is often also applied to other prickly plants. Blessed thistle , Carduus benedictus , so named because it was formerly considered an antidote to the bite of venomous creatures. -- Bull thistle , Cnicus lanceolatus , the common large thistle of neglected pastures. -- Canada thistle , Cnicus arvensis , a native of Europe, but introduced into the United States from Canada. -- Cotton thistle , Onopordon Acanthium . -- Fuller's thistle , the teasel. -- Globe thistle , Melon thistle , etc. See under Globe , Melon , etc. -- Pine thistle , Atractylis gummifera , a native of the Mediterranean region. A vicid gum resin flows from the involucre. -- Scotch thistle , either the cotton thistle, or the musk thistle, or the spear thistle; -- all used national emblems of Scotland. -- Sow thistle , Sonchus oleraceus . -- Spear thistle . Same as Bull thistle . -- Star thistle , a species of Centaurea . See Centaurea . -- Torch thistle , a candelabra-shaped plant of the genus Cereus. See Cereus . -- Yellow thistle , Cincus horridulus . Thistle bird (Zoology) , the American goldfinch, or yellow-bird ( Spinus tristis ); -- so called on account of its feeding on the seeds of thistles. See Illust. under Goldfinch . -- Thistle butterfly (Zoology) , a handsomely colored American butterfly ( Vanessa cardui ) whose larva feeds upon thistles; -- called also painted lady . -- Thistle cock (Zoology) , the corn bunting ( Emberiza militaria ). [ Prov. Eng.] -- Thistle crown , a gold coin of England of the reign of James I., worth four shillings. -- Thistle finch (Zoology) , the goldfinch; -- so called from its fondness for thistle seeds. [ Prov. Eng.] -- Thistle funnel , a funnel having a bulging body and flaring mouth.

Thistly This"tly adjective 1. Overgrown with thistles; as, thistly ground. 2. Fig.: Resembling a thistle or thistles; sharp; pricking.

In such a world, so thorny, and where none
Finds happiness unblighted, or, if found,
Without some thistly sorrow at its side.

Cowper.

Thither Thith"er adverb [ Middle English thider , Anglo-Saxon ðider ; akin to English that ; confer Icelandic þaðra there, Goth. þaþrō thence. See That , and The .] 1. To that place; -- opposed to hither .

This city is near; . . . O, let me escape thither .

Gen. xix. 20.

Where I am, thither ye can not come.

John vii. 34. 2. To that point, end, or result; as, the argument tended thither . Hither and thither , to this place and to that; one way and another. Syn. -- There. Thither , There . Thither properly denotes motion toward a place; there denotes rest in a place; as, I am going thither , and shall meet you there . But thither has now become obsolete, except in poetry, or a style purposely conformed to the past, and there is now used in both senses; as, I shall go there to-morrow; we shall go there together.

Thither Thith"er adjective 1. Being on the farther side from the person speaking; farther; -- a correlative of hither ; as, on the thither side of the water. W. D. Howells. 2. Applied to time: On the thither side of, older than; of more years than. See Hither , adjective Huxley.

Thitherto Thith"er·to` adverb To that point; so far. [ Obsolete]

Thitherward Thith"er·ward adverb To ward that place; in that direction.

They shall ask the way to Zion, with their faces thitherward .

Jer. l. 5.

Thitsee Thit"see noun [ Written also theesee , and thietsie .] 1. (Botany) The varnish tree of Burmah ( Melanorrhœa usitatissima ). 2. A black varnish obtained from the tree.

Thlipsis Thlip"sis noun [ New Latin , from Greek ... pressure, from ... to press.] (Medicine) Compression, especially constriction of vessels by an external cause.

Tho Tho (&thlig;ō) def. art. The. [ Obsolete] Spenser.

Tho Tho pron. plural Those. [ Obsolete]

This knowen tho that be to wives bound.

Chaucer.

Tho Tho adverb [ Anglo-Saxon þā .] Then. [ Obsolete] Spenser.

To do obsequies as was tho the guise.

Chaucer.

Tho Tho conj. Though. [ Reformed spelling.]

Thole Thole noun [ Written also thowel , and thowl .] [ Middle English thol , Anglo-Saxon þol ; akin to Dutch dol , Icelandic þollr a fir tree, a young fir, a tree, a thole.] 1. A wooden or metal pin, set in the gunwale of a boat, to serve as a fulcrum for the oar in rowing. Longfellow. 2. The pin, or handle, of a scythe snath. Thole pin . Same as Thole .

Thole Thole transitive verb [ imperfect & past participle Tholed ; present participle & verbal noun Tholing .] [ Middle English þolen , þolien , Anglo-Saxon þolian ; akin to Old Saxon tholōn , Old High German dolēn , G. ge duld patience, dulden to endure, Icelandic þola , Swedish tåla , Danish taale , Goth. þulan , Latin tolerate , tulisse , to endure, bear, tollere to lift, bear, Greek ... to bear, Sanskrit tul to lift. √55. Confer Tolerate .] To bear; to endure; to undergo. [ Obsolete or Scot.] Gower.

So much woe as I have with you tholed .

Chaucer.

To thole the winter's steely dribble.

Burns.

Thole Thole intransitive verb To wait. [ Prov. Eng. & Scot.]

Thomas phosphate, slag Thom"as phos"phate, slag Same as Basic slag , above.

Thomas process Thom"as proc"ess (Iron Metal.) Same as Basic process , above.

Thomism, Thomaism Tho"mism, Tho"ma·ism noun (Eccl. Hist.) The doctrine of Thomas Aquinas, esp. with respect to predestination and grace.

Thomist Tho"mist noun (Eccl. Hist.) A follower of Thomas Aquinas. See Scotist .

Thomite Tho"mite noun (Eccl. Hist.) A Thomæan.

Thomsen's disease Thom"sen's dis·ease" [ From Thomsen , a physician of Sleswick.] (Medicine) An affection apparently congenital, consisting in tonic contraction and stiffness of the voluntary muscles occurring after a period of muscular inaction.

Thomsenolite Thom"sen·o·lite noun [ Named after Dr. J. Thomsen of Copenhagen. See -lite .] (Min.) A fluoride of aluminium, calcium, and sodium occurring with the cryolite of Greenland.

Thomson process Thomson process [ After Elihu Thomson , American inventor.] A process of electric welding in which heat is developed by a large current passing through the metal.

Thomsonian Thom·so"ni·an adjective (Medicine) Of or pertaining to Thomsonianism. -- noun A believer in Thomsonianism; one who practices Thomsonianism.

Thomsonianism Thom·so"ni·an·ism noun (Medicine) An empirical system which assumes that the human body is composed of four elements, earth, air, fire, and water, and that vegetable medicines alone should be used; -- from the founder, Dr. Samuel Thomson , of Massachusetts.

Thomsonite Thom"son·ite noun [ From R. Dutch Thomson , of Glasgow.] (Min.) A zeolitic mineral, occurring generally in masses of a radiated structure. It is a hydrous silicate of aluminia, lime, and soda. Called also mesole , and comptonite .

Thomæan, Thomean Tho·mæ"an, Tho·me"an noun (Eccl. Hist.) A member of the ancient church of Christians established on the Malabar coast of India, which some suppose to have been originally founded by the Apostle Thomas.

Thong Thong noun [ Middle English thong , þwong , thwang , Anglo-Saxon þwang ; akin to Icelandic þvengr a thong, latchet. √57. Confer Twinge .] A strap of leather; especially, one used for fastening anything.

And nails for loosened spears, and thongs for shields, provide.

Dryden. Thong seal (Zoology) , the bearded seal. See the Note under Seal .

Thooid Tho"oid adjective [ Greek ..., ..., the jacal + -oid .] (Zoology) Of or pertaining to a group of carnivores, including the wovels and the dogs.

Thor Thor noun [ Icelandic þōrs . Confer Thursday .] (Scand. Myth.) The god of thunder, and son of Odin.

Thoracentesis Tho`ra·cen·te"sis noun [ New Latin , from Greek ... thorax + ... pricking, from ... to prick, stab.] (Surg.) The operation of puncturing the chest wall so as to let out liquids contained in the cavity of the chest.

Thoracic Tho·rac"ic adjective [ Confer French thoracique .] (Anat.) Of or pertaining to the thorax, or chest. Thoracic duct (Anat.) , the great trunk of the lymphatic vessels, situated on the ventral side of the vertebral column in the thorax and abdomen. See Illust. of Lacteal .

Thoracic Tho·rac"ic noun [ Confer French thoracique .] (Zoology) One of a group of fishes having the ventral fins placed beneath the thorax or beneath the pectorial fins.

Thoracica Tho·rac"i·ca noun plural [ New Latin ] (Zoology) A division of cirripeds including those which have six thoracic segments, usually bearing six pairs of cirri. The common barnacles are examples.

Thoracometer Tho`ra·com"e·ter noun (Physiol.) Same as Stethometer .

Thoracoplasty Tho`ra·co·plas"ty noun [ Thorax + plasty .] (Medicine) A remodeling or reshaping of the thorax; especially, the operation of removing the ribs, so as to obliterate the pleural cavity in cases of empyema.

Thoracostraca Tho`ra·cos"tra·ca noun plural [ New Latin See Thorax , and Ostracoid , adjective ] (Zoology) An extensive division of Crustacea, having a dorsal shield or carapec... ......niting all, or nearly all, of the thoracic somites to the head. It includes the crabs, lobsters, shrimps, and similar species.

Thoracotomy Tho`ra·cot"o·my noun [ Greek ..., ..., thorax + ... to cut.] (Surg.) The operation of opening the pleural cavity by incision.

Thoral Tho"ral adjective [ Latin torus a couch, bed.] Of or pertaining to a bed. [ R.]

Thorax Tho"rax noun [ Latin , from Greek ....] 1. (Anat.) The part of the trunk between the neck and the abdomen, containing that part of the body cavity the walls of which are supported by the dorsal vertebræ, the ribs, and the sternum, and which the heart and lungs are situated; the chest. » In mammals the thoracic cavity is completely separated from the abdominal by the diaphragm, but in birds and many reptiles the separation is incomplete, while in other reptiles, and in amphibians and fishes, there is no marked separation and no true thorax. 2. (Zoology) (a) The middle region of the body of an insect, or that region which bears the legs and wings. It is composed of three united somites, each of which is composed of several distinct parts. See Illust. in Appendix. and Illust. of Coleoptera . (b) The second, or middle, region of the body of a crustacean, arachnid, or other articulate animal. In the case of decapod Crustacea, some writers include under the term thorax only the three segments bearing the maxillipeds; others include also the five segments bearing the legs. See Illust. in Appendix. 3. (Antiq.) A breastplate, cuirass, or corselet; especially, the breastplate worn by the ancient Greeks.

Thoria Tho"ri·a noun [ New Latin See Thorite .] (Chemistry) A rare white earthy substance, consisting of the oxide of thorium; -- formerly called also thorina .

Thoric Thor"ic adjective (Chemistry) Of or pertaining to thorium; designating the compounds of thorium.

Thorite Tho"rite noun [ So called by Berzelius from the Scandinavian god Thor . See Thor .] (Min.) A mineral of a brown to black color, or, as in the variety orangite , orange-yellow. It is essentially a silicate of thorium.

Thorium Tho"ri·um noun [ New Latin See Thorite .] (Chemistry) A metallic element found in certain rare minerals, as thorite, pyrochlore, monazite, etc., and isolated as an infusible gray metallic powder which burns in the air and forms thoria; -- formerly called also thorinum . Symbol Th. Atomic weight 232.0.

Thorn Thorn noun [ Anglo-Saxon þorn ; akin to Old Saxon & OFries. thorn , Dutch doorn , German dorn , Danish torn , Swedish törne , Icelandic þorn , Goth. þaúrnus ; confer Pol. tarn , Russian tern' the blackthorn, ternie thorns, Sanskrit trna grass, blade of grass. √53.] 1. A hard and sharp-pointed projection from a woody stem; usually, a branch so transformed; a spine. 2. (Botany) Any shrub or small tree which bears thorns; especially, any species of the genus Cratægus, as the haw thorn , white thorn , cockspur thorn . 3. Fig.: That which pricks or annoys as a thorn; anything troublesome; trouble; care.

There was given to me a thorn in the flesh, the messenger of Satan to buffet me.

2 Cor. xii. 7.

The guilt of empire, all its thorns and cares,
Be only mine.

Southern. 4. The name of the Anglo-Saxon letter ..., capital form .... It was used to represent both of the sounds of English th , as in thin , then . So called because it was the initial letter of thorn , a spine. Thorn apple (Botany) , Jamestown weed. -- Thorn broom (Botany) , a shrub that produces thorns. -- Thorn hedge , a hedge of thorn-bearing trees or bushes. -- Thorn devil . (Zoology) See Moloch , 2. -- Thorn hopper (Zoology) , a tree hopper ( Thelia cratægi ) which lives on the thorn bush, apple tree, and allied trees.

Thorn Thorn transitive verb To prick, as with a thorn. [ Poetic]

I am the only rose of all the stock
That never thorn'd him.

Tennyson.

Thorn-headed Thorn"-head`ed adjective Having a head armed with thorns or spines. Thorn-headed worm (Zoology) , any worm of the order Acanthocephala; -- called also thornhead .