Webster's Dictionary, 1913

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Didactyl noun [ Greek di- = di`s- twice + ... finger, toe: confer French didactyle .] (Zoology) An animal having only two digits.

Didactylous adjective (Zoology) Having only two digits; two-toed.

Didal noun A kind of triangular spade. [ Obsolete]

Didapper noun [ For divedapper . See Dive , Dap , Dip , and confer Dabchick .] (Zoology) See Dabchick .

Didascalar adjective Didascalic. [ R.]

Didascalic adjective [ Latin didascalius , Greek ..., from ... to teach: confer French didascalique .] Didactic; preceptive. [ R.] Prior.

Diddle intransitive verb [ Confer Daddle .] To totter, as a child in walking. [ Obsolete] Quarles.

Diddle transitive verb [ Perh. from Anglo-Saxon dyderian to deceive, the letter r being changed to l .] To cheat or overreach. [ Colloq.] Beaconsfield.

Diddler noun A cheat. [ Colloq.]

Jeremy Diddler , a character in a play by James Kenney, entitled "Raising the wind." The name is applied to any needy, tricky, constant borrower; a confidence man.

Didelphia noun plural [ New Latin , from Greek ... = ... matrix, uterus.] (Zoology) The subclass of Mammalia which includes the marsupials. See Marsupialia .

Didelphian adjective (Zoology) Of or relating to the Didelphia. -- noun One of the Didelphia.

Didelphic adjective (Zoology) Having the uterus double; of or pertaining to the Didelphia.

Didelphid adjective (Zoology) Same as Didelphic .

Didelphid noun (Zoology) A marsupial animal.

Didelphous adjective (Zoology) Didelphic.

Didelphyc adjective (Zoology) Same as Didelphic .

Didelphys noun [ New Latin See Didelphia .] (Zoology) Formerly, any marsupial; but the term is now restricted to an American genus which includes the opossums, of which there are many species. See Opossum . [ Written also Didelphis .] See Illustration in Appendix. Cuvier.

Didine adjective (Zoology) Like or pertaining to the genus Didus , or the dodo.

Dido noun ; plural Didos A shrewd trick; an antic; a caper.

To cut a dido , to play a trick; to cut a caper; -- perhaps so called from the trick of Dido, who having bought so much land as a hide would cover, is said to have cut it into thin strips long enough to inclose a spot for a citadel.

Didonia noun [ New Latin So called in allusion to the classical story of Dido and the bull's hide.] (Geom.) The curve which on a given surface and with a given perimeter contains the greatest area. Tait.

Didrachm, Didrachma noun [ Greek ...; di- = di`s- twice + ... a drachm.] A two-drachma piece; an ancient Greek silver coin, worth nearly forty cents.

Didst the 2d pers. sing. imperfect of Do .

Diducement noun Diduction; separation into distinct parts. Bacon.

Diduction noun [ Latin diductio , from diducere , diductum , to draw apart; di- = dis- + ducere to lead, draw.] The act of drawing apart; separation.

Didym noun (Chemistry) See Didymium .

Didymium noun [ New Latin , from Greek ... twin.] (Chemistry) A rare metallic substance usually associated with the metal cerium; -- hence its name. It was formerly supposed to be an element, but has since been found to consist of two simpler elementary substances, neodymium and praseodymium. See Neodymium , and Praseodymium .

Didymous (dĭd"ĭ*mŭs) adjective [ Greek di`dymos twofold, twin.] (Botany) Growing in pairs or twins.

Didynamia noun plural [ New Latin , from Greek di- = di`s- twice + ... power.] (Botany) A Linnæan class of plants having four stamens disposed in pairs of unequal length.

Didynamian adjective Didynamous.

Didynamous adjective (Botany) Of or pertaining to the Didynamia; containing four stamens disposed in pairs of unequal length.

Die intransitive verb [ imperfect & past participle Died ; present participle & verbal noun Dying .] [ Middle English deyen , dien , of Scand. origin; confer Icelandic deyja ; akin to Danish döe , Swedish , Goth. diwan (cf. Goth. afd...jan to harass), OFries. d...ia to kill, Old Saxon doian to die, Old High German touwen , OSlav. daviti to choke, Lithuanian dovyti to torment. Confer Dead , Death .]
1. To pass from an animate to a lifeless state; to cease to live; to suffer a total and irreparable loss of action of the vital functions; to become dead; to expire; to perish; -- said of animals and vegetables; often with of , by , with , from , and rarely for , before the cause or occasion of death; as, to die of disease or hardships; to die by fire or the sword; to die with horror at the thought.

To die by the roadside of grief and hunger.
Macaulay.

She will die from want of care.
Tennyson.

2. To suffer death; to lose life.

In due time Christ died for the ungodly.
Rom. v. 6.

3. To perish in any manner; to cease; to become lost or extinct; to be extinguished.

Letting the secret die within his own breast.
Spectator.

Great deeds can not die .
Tennyson.

4. To sink; to faint; to pine; to languish, with weakness, discouragement, love, etc.

His heart died within, and he became as a stone.
1 Sam. xxv. 37.

The young men acknowledged, in love letters, that they died for Rebecca.
Tatler.

5. To become indifferent; to cease to be subject; as, to die to pleasure or to sin.

6. To recede and grow fainter; to become imperceptible; to vanish; -- often with out or away .

Blemishes may die away and disappear amidst the brightness.
Spectator.

7. (Architecture) To disappear gradually in another surface, as where moldings are lost in a sloped or curved face.

8. To become vapid, flat, or spiritless, as liquor.

To die in the last ditch , to fight till death; to die rather than surrender.

"There is one certain way," replied the Prince [ William of Orange] " by which I can be sure never to see my country's ruin, -- I will die in the last ditch ."
Hume (Hist. of Eng. ).

-- To die out , to cease gradually; as, the prejudice has died out .

Syn. -- To expire; decease; perish; depart; vanish.

Die noun ; plural in 1 and (usually) in 2, Dice (dīs); in 4 & 5, Dies (dīz). [ Middle English dee , die , French , from Latin datus given, thrown, past participle of dare to give, throw. See Date a point of time.]
1. A small cube, marked on its faces with spots from one to six, and used in playing games by being shaken in a box and thrown from it. See Dice .

2. Any small cubical or square body.

Words . . . pasted upon little flat tablets or dies .
Watts.

3. That which is, or might be, determined, by a throw of the die; hazard; chance.

Such is the die of war.
Spenser.

4. (Architecture) That part of a pedestal included between base and cornice; the dado.

5. (Machinery) (a) A metal or plate (often one of a pair) so cut or shaped as to give a certain desired form to, or impress any desired device on, an object or surface, by pressure or by a blow; used in forging metals, coining, striking up sheet metal, etc. (b) A perforated block, commonly of hardened steel used in connection with a punch, for punching holes, as through plates, or blanks from plates, or for forming cups or capsules, as from sheet metal, by drawing. (c) A hollow internally threaded screw-cutting tool, made in one piece or composed of several parts, for forming screw threads on bolts, etc.; one of the separate parts which make up such a tool.

Cutting die (Mech.) , a thin, deep steel frame, sharpened to a cutting edge, for cutting out articles from leather, cloth, paper, etc. -- The die is cast , the hazard must be run; the step is taken, and it is too late to draw back; the last chance is taken.

Diecian adjective , Di*e"cious adjective (Botany) See Diœcian , and Diœcious .

Diedral adjective The same as Dihedral .

Diegesis noun [ New Latin , from Greek ..., from ... to narrate; dia` through + ... to lead.] A narrative or history; a recital or relation.

Dielectric noun [ Prefix dia- + electric .] (Electricity) Any substance or medium that transmits the electric force by a process different from conduction, as in the phenomena of induction; a nonconductor. separating a body electrified by induction, from the electrifying body.

Dielytra noun (Botany) See Dicentra .

Diencephalon noun [ New Latin See Dia- , and Encephalon .] (Anat.) The interbrain or thalamencephalon; -- sometimes abbreviated to dien . See Thalamencephalon .

Dieresis noun [ New Latin ] Same as Diæresis .

Dies Iræ Day of wrath; -- the name and beginning of a famous mediæval Latin hymn on the Last Judgment.

Dies juridicus ; plural Dies juridici . [ Latin ] (Law) A court day.

Dies non [ Latin dies non juridicus .] (Law) A day on which courts are not held, as Sunday or any legal holiday.

Diesel engine, motor [ After Dr. Rudolf Diesel, of Munich, the inventor.] A type of internal- combustion engine in which the air drawn in by the suction stroke is so highly compressed that the heat generated ignites the fuel (usually crude oil), the fuel being automatically sprayed into the cylinder under pressure. The Diesel engine has a very high thermal efficiency.

Diesinker noun An engraver of dies for stamping coins, medals, etc.

Diesinking noun The process of engraving dies.

Diesis noun ; plural Dieses . [ New Latin , from Greek ..., from ... to let go through, dissolve; dia` through + ... to let go, send.]
1. (Mus.) A small interval, less than any in actual practice, but used in the mathematical calculation of intervals.

2. (Print.) The mark ‡; -- called also double dagger .

Diestock noun A stock to hold the dies used for cutting screws.