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Dextronic

Pertaining to, or derived from, dextrose; as, dextronic acid.

Dextrorotatory

Turning, or causing to turn, toward the right hand; esp., turning the plane of polarization of luminous rays toward the right hand; as, dextrorotatory crystals, sugars, etc. Cf. Levorotatory.

Dextrorse Dextrorsal

Turning from the left to the right, in the ascending line, as in the spiral inclination of the stem of the common morning-glory; as, dextrorse vines.

Dextrose

A sirupy, or white crystalline, variety of sugar, C6H12O6 (so called from turning the plane of polarization to the right), occurring in many ripe fruits, and also called glucose. Dextrose and levulose are obtained by the inversion of cane sugar or sucrose, and hence the mixture is called called invert sugar. Dextrose is chiefly obtained by the action of heat and acids on starch, and hence called also starch sugar. It is also formed from starchy food by the action of the amylolytic ferments of saliva and pancreatic juice.

Dey

The governor of Algiers; -- so called before the French conquest in 1830.

Dezincification

The act or process of freeing from zinc; also, the condition resulting from the removal of zinc.

Dhaka

The capital city of Bangladesh. Population (2000) = 3,839,000.

Dharma

The basic principles of the cosmos; also: an ancient sage in Hindu mythology worshipped as a god by some lower castes;.

Dhole

A fierce, wild dog (Canis Dukhunensis), found in the mountains of India. It is remarkable for its propensity to hunt the tiger and other wild animals in packs.

Dhony

A Ceylonese boat. See Doni.

Dhow

A coasting vessel of Arabia, East Africa, and the Indian Ocean. It has generally but one mast and a lateen sail.

Diabase

A basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; -- often limited to rocks pretertiary in age. It includes part of what was early called greenstone.

diabetes

Any of several diseases which is attended with a persistent, excessive discharge of urine; when used without qualification, the term usually refers to diabetes mellitus. The most common form is diabetes mellitus, in which the urine is not only increased in quantity, but contains saccharine matter, and the condition if untreated is generally fatal.

Diabolical Diabolic

Pertaining to the devil; resembling, or appropriate, or appropriate to, the devil; befitting hell or satan; devilish; infernal; impious; as, a diabolic or diabolical temper or act; the diabolical expression on his face; fires lit up a diabolic scene.

Diabolify

To ascribed diabolical qualities to; to change into, or to represent as, a devil.

Diabolism

Character, action, or principles appropriate to the devil.

Diabolo

An old game or sport (revived under this name) consisting in whirling on a string, fastened to two sticks, a small somewhat spool-shaped object (called the diabolo) so as to balance it on a string, toss it in the air and catch it, etc.

Diacatholicon

A universal remedy; -- a name formerly given to a purgative electuary.

Diacaustic

That which burns by refraction, as a double convex lens, or the sun's rays concentrated by such a lens, sometimes used as a cautery.

Diachylum Diachylon

A plaster originally composed of the juices of several plants (whence its name), but now made of an oxide of lead and oil, and consisting essentially of glycerin mixed with lead salts of the fat acids.

Diacid

Divalent; -- said of a base or radical as capable of saturating two acid monad radicals or a dibasic acid. Cf. Dibasic, a., and Biacid.

Diacoustic

Pertaining to the science or doctrine of refracted sounds.

Diacoustics

That branch of natural philosophy which treats of the properties of sound as affected by passing through different mediums; -- called also diaphonics. See the Note under Acoustics.

Diacritical Diacritic

That separates or distinguishes; -- applied to points or marks used to distinguish letters of similar form, or different sounds of the same letter, as, /, /, /, /, /, etc.

Diactinic

Capable of transmitting the chemical or actinic rays of light; as, diactinic media.

Diadelphia

A Linn/an class of plants whose stamens are united into two bodies or bundles by their filaments.

Diadelphous Diadelphian

Of or pertaining to the class Diadelphia; having the stamens united into two bodies by their filaments (said of a plant or flower); grouped into two bundles or sets by coalescence of the filaments (said of stamens).

Diadem

To adorn with a diadem; to crown.

Diadrom

A complete course or vibration; time of vibration, as of a pendulum.

Diageotropism

The tendency of organs (as roots) of plants to assume a position oblique or transverse to a direction towards the center of the earth.

Diaglyphtic Diaglyphic

Represented or formed by depressions in the general surface; as, diaglyphic sculpture or engraving; -- opposed to anaglyphic.

Diagnose

To ascertain by diagnosis; to diagnosticate. See Diagnosticate.

diagnosing

the act or process of identifying the nature or cause of some phenomenon.

Diagnosis

The art or act of recognizing the presence of disease from its signs or symptoms, and deciding as to its character; also, the decision arrived at.

Diagnostic

The mark or symptom by which one disease is known or distinguished from others.

Diagnosticate

To make a diagnosis of; to recognize by its symptoms, as a disease.

Diagnostics

That part of medicine which has to do with ascertaining the nature of diseases by means of their symptoms or signs.

Diagometer

A sort of electroscope, invented by Rousseau, in which the dry pile is employed to measure the amount of electricity transmitted by different bodies, or to determine their conducting power.

Diagonal

A right line drawn from one angle to another not adjacent, of a figure of four or more sides, and dividing it into two parts.

Diagonial

Diagonal; diametrical; hence; diametrically opposed.

Diagram

To put into the form of a diagram.

Diagrammatic

Pertaining to, or of the nature of, a diagram; showing by diagram.

Diagraph

A drawing instrument, combining a protractor and scale.

Diagraphics

The art or science of descriptive drawing; especially, the art or science of drawing by mechanical appliances and mathematical rule.

Diaheliotropism

A tendency of leaves or other organs of plants to have their dorsal surface faced towards the rays of light.

Dial

To measure with a dial.

Dialect

Means or mode of expressing thoughts; language; tongue; form of speech.

Dialectal

Relating to a dialect; dialectical; as, a dialectical variant.

Dialectician

One versed in dialectics; a logician; a reasoner.

Dialectics

That branch of logic which teaches the rules and modes of reasoning; the application of logical principles to discursive reasoning; the science or art of discriminating truth from error; logical discussion.

Dialectology

That branch of philology which is devoted to the consideration of dialects.

Dialing

The art of constructing dials; the science which treats of measuring time by dials.

Dialist

A maker of dials; one skilled in dialing.

Diallage

A dark green or bronze-colored laminated variety of pyroxene, common in certain igneous rocks.

Diallel

Meeting and intersecting, as lines; not parallel; -- opposed to parallel.

Diallyl

A volatile, pungent, liquid hydrocarbon, C6H10, consisting of two allyl radicals.

Dialogism

An imaginary speech or discussion between two or more; dialogue.

Dialogite

Native carbonate of manganese; rhodochrosite.

Dialytic

Having the quality of unloosing or separating.

Dialyze

To separate, prepare, or obtain, by dialysis or osmose; to pass through an animal membrane; to subject to dialysis.

Dialyzed

Prepared by diffusion through an animal membrane; as, dialyzed iron.

Dialyzer

The instrument or medium used to effect chemical dialysis.

Diamagnetic

Any substance, as bismuth, glass, phosphorous, etc., which in a field of magnetic force is differently affected from the ordinary magnetic bodies, as iron; that is, which tends to take a position at right angles to the lines of magnetic force, and is repelled by either pole of the magnet. Contrasted with paramagnetic and ferromagnetic.

Diamagnetism

The science which treats of diamagnetic phenomena, and of the properties of diamagnetic bodies.

Diameter

Any right line passing through the center of a figure or body, as a circle, conic section, sphere, cube, etc., and terminated by the opposite boundaries; a straight line which bisects a system of parallel chords drawn in a curve. A diametral plane.

Diametrically

In a diametrical manner; directly; as, diametrically opposite.

Diamide

Any compound containing two amido groups united with one or more acid or negative radicals, -- as distinguished from a diamine. Cf. Amido acid, under Amido, and Acid amide, under Amide.

Diamido-

A prefix or combining form of Diamine.

Diamine

A compound containing two amido groups united with one or more basic or positive radicals, -- as contrasted with a diamide.

Diamond

Resembling a diamond; made of, or abounding in, diamonds; as, a diamond chain; a diamond field.

Diamond-back

The salt-marsh terrapin of the Atlantic coast (Malacoclemmys palustris).

Diamonded

Having figures like a diamond or lozenge.

Diamondize

To set with diamonds; to adorn; to enrich.

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