Aptitude for teaching.

The art or science of teaching.

An animal having only two digits.

Having only two digits; two-toed.

A kind of triangular spade.

See Dabchick.

Didascalic.

Didactic; preceptive.

To cheat or overreach.

A cheat.

The subclass of Mammalia which includes the marsupials. See Marsupialia.

Of or relating to the Didelphia. One of the Didelphia.

Having the uterus double; of or pertaining to the Didelphia.

A marsupial animal.

Didelphic.

Same as Didelphic.

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.

Like or pertaining to the genus Didus, or the dodo.

A shrewd trick; an antic; a caper.

The curve which on a given surface and with a given perimeter contains the greatest area.

A two-drachma piece; an ancient Greek silver coin, worth nearly forty cents.

the 2d pers. sing. imp. of Do.

Diduction; separation into distinct parts.

The act of drawing apart; separation.

See Didymium.

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.

Growing in pairs or twins.

A Linn/an class of plants having four stamens disposed in pairs of unequal length.

Didynamous.

Of or pertaining to the Didynamia; containing four stamens disposed in pairs of unequal length.

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.

See Di/cian, and Di/cious.

The same as Dihedral.

a genus of evergreen perennial herbs of tropical America with lush foliage and poisonous sap; often cultivated as houseplants.

A narrative or history; a recital or relation.

stubbornly and vigorously resisting in the face of seemingly hopeless odds; as, diehard opposition.

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.

See Dicentra.

The interbrain or thalamencephalon; -- sometimes abbreviated to dien. See Thalamencephalon.

Same as Di/resis.

The separation or resolution of one syllable into two; -- the opposite of syn/resis.

small genus of low deciduous shrubs; the bush honeysuckles.

plural of diesis.

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

The process of engraving dies.

A small interval, less than any in actual practice, but used in the mathematical calculation of intervals.

A stock to hold the dies used for cutting screws.

in a period of sexual inactivity; -- of animals that have several estrous cycles in one breeding season.

same as diestrus.

a state or interval of sexual inactivity or quiescence between periods of activity; -- of animals having several estrous cycles in one breeding season.

A legislative or administrative assembly in Germany, Poland, and some other countries of Europe; a deliberative convention; a council; as, the Diet of Worms, held in 1521. Any of various national or local assemblies; Occasionally, the Reichstag of the German Empire, Reichsrath of the Austrian Empire, the federal legislature of Switzerland, etc. The legislature of Denmark, Sweden, Japan, or Hungary. The state assembly or any of various local assemblies in the states of the German Empire, as the legislature (Landtag) of the kingdom of Prussia, and the Diet of the Circle (Kreistag) in its local government. The local legislature (Landtag) of an Austrian province. The federative assembly of the old Germanic Confederation (1815 -- 66). In the old German or Holy Roman Empire, the great formal assembly of counselors (the Imperial Diet or Reichstag) or a small, local, or informal assembly of a similar kind (the Court Diet, or Hoftag).

One who lives in accordance with prescribed rules for diet; a dieter.

A rule of diet; a fixed allowance of food, as in workhouse, prison, etc.

One who diets; one who prescribes, or who partakes of, food, according to hygienic rules.

Of or performance to diet, or to the rules for regulating the kind and quantity of food to be eaten.

In a dietetical manner.

That part of the medical or hygienic art which relates to diet or food; rules for diet.

A physician who applies the rules of dietetics to the cure of diseases.

A colorless, volatile, alkaline liquid, NH(C2H5)2, having a strong fishy odor resembling that of herring or sardines. Cf. Methylamine.

Dietetic.

A subordinate or local assembly; a diet of inferior rank.

One skilled in dietetics.

Evil name; bad reputation; defamation.

A form of divorce, among the ancient Romans, in which a cake was used. See Confarreation.

To cause to be different or unlike; to set at variance.

To cause to differ; to make different; to mark as different; to distinguish.

Distinct; separate; not the same; other.

The formal or distinguishing part of the essence of a species, by which it is distinguished from other members of its genus; the characteristic attribute of a species; specific difference; as, a proper definition must have both genus and differentia.

possessing a differential coefficient or derivative; -- of a mathematical expression.

Relating to or indicating a difference; creating a difference; discriminating; special; as, differential characteristics; differential duties; a differential rate.

An increment, usually an indefinitely small one, which is given to a variable quantity.

In the way of differentiation.

To acquire a distinct and separate character.

made different (especially in the course of development) or shown to be different; as, the differentiated markings of butterflies; the regionally differentiated results. Opposite of undifferentiated.

The act of differentiating.

One who, or that which, differentiates.

In a different manner; variously.

In a differing or different manner.

Difficult; hard to manage; stubborn.

To make difficult.

To render difficult; to impede; to perplex.

To render difficult; to difficilitate.

With difficulty.

Difficulty.

The state of being difficult, or hard to do; hardness; arduousness; -- opposed to easiness or facility; as, the difficulty of a task or enterprise; a work of difficulty.

To be distrustful.

The state of being diffident; distrust; want of confidence; doubt of the power, ability, or disposition of others.

See Diffidence.

Wanting confidence in others; distrustful.

In a diffident manner.

To split.

To define.

Definitive; determinate; final.

Act of cleaving or splitting.

A blowing apart or away.

A flowing off on all sides; fluidity.

Flowing apart or off; dissolving; not fixed.

Irregular in form; -- opposed to uniform; anomalous; hence, unlike; dissimilar; as, to difform corolla, the parts of which do not correspond in size or proportion; difform leaves.

Irregularity of form; diversity of form; want of uniformity.

To break or separate into parts; to deflect, or decompose by deflection, a/ rays of light.

The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by the action of a grating of fine lines or bars.

That produces diffraction.

Material which, in the process of catalysis, has diffused or passed through the separating membrane.

Poured out; widely spread; not restrained; copious; full; esp., of style, opposed to concise or terse; verbose; prolix; as, a diffuse style; a diffuse writer.

Spread abroad; dispersed; loose; flowing; diffuse.

In a diffuse manner.

The quality of being diffuse; especially, in writing, the use of a great or excessive number of word to express the meaning; copiousness; verbosity; prolixity.

One who, or that which, diffuses.

The quality of being diffusible; capability of being poured or spread out.

Capable of flowing or spreading in all directions; that may be diffused.

Diffusibility.

The act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion.

Having the quality of diffusing; capable of spreading every way by flowing; spreading widely; widely reaching; copious; diffuse.

In a diffusive manner.

The quality or state of being diffusive or diffuse; extensiveness; expansion; dispersion. Especially of style: Diffuseness; want of conciseness; prolixity.

Tendency to become diffused; tendency, as of heat, to become equalized by spreading through a conducting medium.

A thrust; a punch; a poke; as, a dig in the side or the ribs. See Dig, v. t., 4.

To understand; as, do you dig me?.

One who marries a second time; a deuterogamist.

A letter (/, /) of the Greek alphabet, which early fell into disuse.