Webster's Dictionary, 1913

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Diagram noun [ Greek ..., from ... to mark out by lines; dia` through + ... to draw, write: confer French diagramme . See Graphic .]
1. (Geom.) A figure or drawing made to illustrate a statement, or facilitate a demonstration; a plan.

2. Any simple drawing made for mathematical or scientific purposes, or to assist a verbal explanation which refers to it; a mechanical drawing, as distinguished from an artistical one.

Indicator diagram . (Steam Engine) See Indicator card , under indicator

Diagram transitive verb To put into the form of a diagram.

Diagrammatic adjective Pertaining to, or of the nature of, a diagram; showing by diagram. -- Di`a*gram*mat"ic*ly adverb

Diagraph noun [ Greek ... to draw: confer French diagraphe . See Diagram .] A drawing instrument, combining a protractor and scale.

Diagraphic, Diagraphical adjective [ Confer French diagraphique .] Descriptive.

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

Diaheliotropic adjective [ Greek ... through, at variance + ... sun + ... turning.] (Botany) Relating or, or manifesting, diaheliotropism.

Diaheliotropism noun (Botany) A tendency of leaves or other organs of plants to have their dorsal surface faced towards the rays of light.

Dial noun [ Late Latin dialis daily, from Latin dies day. See Deity .]
1. An instrument, formerly much used for showing the time of day from the shadow of a style or gnomon on a graduated arc or surface; esp., a sundial; but there are lunar and astral dials . The style or gnomon is usually parallel to the earth's axis, but the dial plate may be either horizontal or vertical.

2. The graduated face of a timepiece, on which the time of day is shown by pointers or hands.

3. A miner's compass.

Dial bird (Zoology) , an Indian bird ( Copsychus saularius ), allied to the European robin. The name is also given to other related species. -- Dial lock , a lock provided with one or more plates having numbers or letters upon them. These plates must be adjusted in a certain determined way before the lock can be operated. -- Dial plate , the plane or disk of a dial or timepiece on which lines and figures for indicating the time are placed.

Dial transitive verb [ imperfect & past participle Dialed or Dialled ; present participle & verbal noun Dialing or Dialling .]
1. To measure with a dial.

Hours of that true time which is dialed in heaven.
Talfourd.

2. (Mining) To survey with a dial. Raymond.

Dialect noun [ French dialecte , Latin dialectus , from Greek ..., from ... to converse, discourse. See Dialogue .]
1. Means or mode of expressing thoughts; language; tongue; form of speech.

This book is writ in such a dialect
As may the minds of listless men affect.
Bunyan .
The universal dialect of the world.
South.

2. The form of speech of a limited region or people, as distinguished from ether forms nearly related to it; a variety or subdivision of a language; speech characterized by local peculiarities or specific circumstances; as, the Ionic and Attic were dialects of Greece; the Yorkshire dialect ; the dialect of the learned.

In the midst of this Babel of dialects there suddenly appeared a standard English language.
Earle.

[ Charles V.] could address his subjects from every quarter in their native dialect .
Prescott.

Syn. -- Language; idiom; tongue; speech; phraseology. See Language , and Idiom .

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

Dialectic noun Same as Dialectics .

Plato placed his dialectic above all sciences.
Liddell & Scott.

Dialectic, Dialectical adjective [ Latin dialecticus , Greek ...: confer French dialectique . See Dialect .]
1. Pertaining to dialectics; logical; argumental.

2. Pertaining to a dialect or to dialects. Earle.

Dialectically adverb In a dialectical manner.

Dialectician noun [ Confer French dialecticien .] One versed in dialectics; a logician; a reasoner.

Dialectics noun [ Latin dialectica (sc. ars ), Greek ... (sc. ...): confer French dialectique .] 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.

» Dialectics was defined by Aristotle to be the method of arguing with probability on any given problem, and of defending a tenet without inconsistency. By Plato, it was used in the following senses:
1. Discussion by dialogue as a method of scientific investigation. 2. The method of investigating the truth by analysis. 3. The science of ideas or of the nature and laws of being -- higher metaphysics. By Kant, it was employed to signify the logic of appearances or illusions, whether these arise from accident or error, or from those necessary limitations which, according to this philosopher, originate in the constitution of the human intellect.

Dialectology noun [ Dialect + -logy .] That branch of philology which is devoted to the consideration of dialects. Beck.

Dialector noun One skilled in dialectics.

Dialing noun
1. The art of constructing dials; the science which treats of measuring time by dials. [ Written also dialling .]

2. A method of surveying, especially in mines, in which the bearings of the courses, or the angles which they make with each other, are determined by means of the circumferentor.

Dialist noun A maker of dials; one skilled in dialing.

Diallage noun [ New Latin , from Greek ... interchange, change, from ... to interchange.] (Rhet.) A figure by which arguments are placed in various points of view, and then turned to one point. Smart.

Diallage noun [ Greek ... change, alluding to the change and inequality of luster between the natural joints of the mineral.] (Min.) A dark green or bronze-colored laminated variety of pyroxene, common in certain igneous rocks.

Diallel adjective [ Greek ... crossing.] Meeting and intersecting, as lines; not parallel; -- opposed to parallel . [ Obsolete] Ash.

Diallyl noun (Chemistry) A volatile, pungent, liquid hydrocarbon, C 6 H 10 , consisting of two allyl radicals, and belonging to the acetylene series.

Dialogical adjective [ Greek ... belonging to discourse.] Relating to a dialogue; dialogistical. Burton.

Dialogically adverb In the manner or nature of a dialogue. Goldsmith.

Dialogism noun [ Greek ..., from ...: confer French dialogisme . See Dialogue .] An imaginary speech or discussion between two or more; dialogue. Fulke.

Dialogist noun [ Latin dialogista : confer French dialogiste .]
1. A speaker in a dialogue.

2. A writer of dialogues. P. Skelton.

Dialogistic, Dialogistical adjective [ Greek ....] Pertaining to a dialogue; having the form or nature of a dialogue. -- Di*al`o*gis"tic*al*ly , adverb

Dialogite noun [ From Greek ... an arguing.] (Min.) Native carbonate of manganese; rhodochrosite.

Dialogize transitive verb [ Greek ...: confer French dialogiser .] To discourse in dialogue. Fotherby.

Dialogue noun [ Middle English dialogue , Latin dialogus , from Greek ..., from ... to converse, dia` through + ... to speak: confer French dialogue . See Legend .]
1. A conversation between two or more persons; particularly, a formal conservation in theatrical performances or in scholastic exercises.

2. A written composition in which two or more persons are represented as conversing or reasoning on some topic; as, the Dialogues of Plato.

Dialogue intransitive verb [ Confer French dialoguer .] To take part in a dialogue; to dialogize. [ R.] Shak.

Dialogue transitive verb To express as in dialogue. [ R.]

And dialogued for him what he would say.
Shak.

Dialypetalous adjective [ Greek dia` through, asunder + ... to loose + ... leaf.] (Botany) Having separate petals; polypetalous.

Dialysis noun ; plural Dialyses . [ Latin , separation, from Greek ..., from ... to part asunder, dissolve; dia` through + ... to loose.]
1. (Gram.) Diæresis. See Diæresis , 1.

2. (Rhet.) Same as Asyndeton .

3. (Medicine) (a) Debility. (b) A solution of continuity; division; separation of parts.

4. (Chemistry) The separation of different substances in solution, as crystalloids and colloids, by means of their unequal diffusion, especially through natural or artificial membranes.

Dialytic adjective [ Greek ..., from .... See Dialysis .] Having the quality of unloosing or separating. Clarke.

Dialytic telescope , an achromatic telescope in which the colored dispersion produced by a single object lens of crown glass is corrected by a smaller concave lens, or combination of lenses, of high dispersive power, placed at a distance in the narrower part of the converging cone of rays, usually near the middle of the tube.

Dialyzate noun (Chemistry) The material subjected to dialysis.

Dialyzation noun (Chemistry) The act or process of dialysis.

Dialyze transitive verb [ imperfect & past participle Dialyzed ; present participle & verbal noun Dialyzing .] (Chemistry) To separate, prepare, or obtain, by dialysis or osmose; to pass through an animal membrane; to subject to dialysis. [ Written also dialyse .]

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

Dialyzer noun The instrument or medium used to effect chemical dialysis.

Diamagnet noun [ Prefix dia- + magnet .] A body having diamagnetic polarity.

Diamagnetic adjective Pertaining to, or exhibiting the phenomena of, diamagnetism; taking, or being of a nature to take, a position at right angles to the lines of magnetic force. See Paramagnetic .

Diamagnetic attraction . See under Attraction .

Diamagnetic noun 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.

Diamagnetically adverb In the manner of, or according to, diamagnetism.

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

2. That form or condition of magnetic action which characterizes diamagnetics.

Diamantiferous adjective [ French diamant diamond + -ferous .] Yielding diamonds.

Diamantine adjective Adamantine. [ Obsolete]