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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.

rting from, as in distribute, disconnect; hence it often has the force of a privative and negative, as in disarm, disoblige, disagree. Also intensive, as in dissever.

. -- but I do say so." Sir W. Scott. "I did love him, but scorn him now." Latham. (c) In negative and interrogative constructions, do and did are in common use. I do not wish to see them; what do you think Did Cæsar cross the Tiber He did not. "Do you love me" Shak. (d) Do, as an auxiliary, is supposed to have been fi…

belief respecting anything; to hesitate in belief; to be undecided as to the truth of the negative or the affirmative proposition; to b e undetermined. Even in matters divine, concerning some things, we may lawfully doubt, and suspend our judgment. Hooker. To try your love and make you doubt of mine. Dryden.…

(Photog.), a glass plate having a dry coating sensitive to light, upon which photographic negatives or pictures can be made, without moistening. -- Dry-plate process, the process of photographing with dry plates. -- Dry point. (Fine Arts) (a) An engraving made with the needle instead of the burin, in which the work i…

A print made from two half-tone plates made from the same negative, but etched differently.

Negative electricity, the electricity that appears at the negative pole or cathode, or is produced by the friction of resinous substance; -- called also resinous electricity. (h) Organic electricity, that which is developed in organic structures, either animal or vegetable, the phrase animal electricity being much more…

ectricity, produced by electricity, producing or employing electricity, etc.; as, electro-negative; electro-dynamic; electro- magnet.

Possessing electrical polarity; positively electrified at one end, or on one surface, and negatively at the other; -- said of a conductor.

Of such a nature relatively to some other associated body or bodies, as to tend to the negative pole of a voltaic battery, in electrolysis, while the associated body tends to the positive pole; - - the converse or correlative of electro-negative.

A figure of speech by which what is to be understood affirmatively is stated negatively, and the contrary; affirmation by contraries.

Potential energy; negative value of the force function.

d by the mirror or object glass is viewed. Collimating eyepiece. See under Collimate. -- Negative, or Huyghenian, eyepiece, an eyepiece consisting of two plano-convex lenses with their curved surfaces turned toward the object glass, and separated from each other by about half the sum of their focal distances, the imag…

A non-metallic, gaseous element, strongly acid or negative, or associated with chlorine, bromine, and iodine, in the halogen group of which it is the first member. It always occurs combined, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepar…

To show indistinctly or become indistinct, as the picture on a negative sometimes does in the process of development.

A prefix to verbs, having usually the force of a negative or privative. It often implies also loss, detriment, or destruction, and sometimes it is intensive, meaning utterly, quite thoroughly, as in forbathe.

An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, bromine, and iodine; sometimes, also, fluorine and cyanogen. See Chlorine family, under Chlorine.

Resembling salt; -- said of certain binary compounds consisting of a metal united to a negative element or radical, and now chiefly applied to the chlorides, bromides, iodides, and sometimes also to the fluorides and cyanides. -- n.

A method of transferring pictures from photographic negatives to hardened gelatin plates from which impressions are produced on paper as by lithography.

ence (Fig.), to be whole, sound, consistent, without gaps or holes; -- commonly used in a negative sense; as, his statements will not hold water. [Collog.] (b) (Naut.) To hold the oars steady in the water, thus checking the headway of a boat.