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(Geol.) A period in the American eocene, the lowest in the tertiary age except the lignitic. [ 1913 Webster ]

. (Photog.) A sensitized paper for obtaining positives by artificial light. It is coated with gelatin containing silver bromide and chloride. [ Eng. ] [ Webster 1913 Suppl. ]

n. (Elec.) The strength of a current of electricity carried by a conductor or generated by a machine, measured in ampères. [ Webster 1913 Suppl. ]

{ ‖ } n. [ From the name of a French electrician. ] (Elec.) The unit of electric current; -- defined by the International Electrical Congress in 1893 and by U. S. Statute as, one tenth of the unit of current of the C. G. S. system of electro-magnetic units, or the practical equivalent of the unvarying current which, when passed through a standard solution of nitrate of silver in water, deposits silver at the rate of 0.001118 grams per second. Called also the international ampère. [ 1913 Webster ]

. (Elec.) A unit, employed in calculating fall of pressure in distributing mains, equivalent to a current of one ampère flowing through one foot of conductor. [ Webster 1913 Suppl. ]

. (Elec.) The quantity of electricity delivered in hour by a current whose average strength is one ampère. It is used as a unit of charge quantity; the Ampere hour is equal to 3600 coulombs. The terms and are sometimes similarly used. [ Webster 1913 Suppl. ]

n. 1. a unit of charge equal to that acquired by the accumulation of one ampere for one second.
Syn. -- coulomb, C [ WordNet 1.5 ]

. (Elec.) A unit of magnetomotive force equal to the product of one complete convolution (of a coiled conductor) into one ampère of current; thus, a conductor having five convolutions and carrying a current of half an ampère is said to have 21/2 ampère turns. The magnetizing effect of a coil is proportional to the number of its ampère turns. [ Webster 1913 Suppl. ]

{ ‖ } n. [ Ampère + meter. ] (Physics) An instrument for measuring the strength of an electrical current in ampères. [ 1913 Webster ]

n. [ A corruption of and, per se and, i. e., & by itself makes and. ] A word used to describe the character &unr_;, &unr_;, or &. Halliwell. [ 1913 Webster ]

n. 1. an anchorman or anchorwoman.. The anchorperson usually begins the broadcast, discusses certain topics, and introduces new topics, which may be discussed by other reprorters, especially when the report is recorded or broadcast from a location other than the main broadcast studio.
Syn. -- anchor, anchorman, anchorwoman. [ WordNet 1.5 +PJC ]

a. [ Angio- + monospermous. ] (Bot.) Producing one seed only in a seed pod. [ 1913 Webster ]

n. [ Angio- + Gr. &unr_;, &unr_;, seed. ] (Bot.) A plant which has its seeds inclosed in a pericarp. Contrasted with gymnosperm. [ 1913 Webster ]

☞ The term is restricted to exogenous plants, and applied to one of the two grand divisions of these species, the other division including gymnosperms, or those which have naked seeds. The oak, apple, beech, etc., are angiosperms, while the pines, spruce, hemlock, and the allied varieties, are gymnosperms. [ 1913 Webster ]

a. (Bot.) Same as Angiospermous. [ 1913 Webster ]

a. (Bot.) Having seeds inclosed in a pod or other pericarp. [ 1913 Webster ]

n. Opposition to imperialism. This term was applied originally in the United States, after the Spanish-American war (1898), to the attitude or principles of those opposing territorial expansion; in England, of those, often called Little Englanders, opposing the extension of the empire and the closer relation of its parts, esp. in matters of commerce and imperial defense. After the second world war, the term became used for opposition to any hegemony of one power over a foreign territory, and to the support for the national independence of territories, as in Africa, which were controlled by European nations. -- An`ti-im*pe"ri*al*ist, n. -- An`ti-im*pe`ri*al*is"tic a. [ Webster 1913 Suppl. +PJC ]

n. (Med.) A remedy possessing the property of preventing the return of periodic paroxysms, or exacerbations, of disease, as in intermittent fevers. [ 1913 Webster ]

a. (Med.) Opposed to, or checking motion; acting upward; -- applied to an inverted action of the intestinal tube. [ 1913 Webster ]

‖n. [ Gr. 'antiperi`stasis; 'anti` against + peri`stasis a standing around, fr. periista`nai to stand around; peri` around + "ista`nai to stand.] Opposition by which the quality opposed acquires strength; resistance or reaction roused by opposition or by the action of an opposite principle or quality. [1913 Webster]

a. Pertaining to antiperistasis. [ 1913 Webster ]

n. One who apes. [ 1913 Webster ]

‖n.; pl. Aperçus /plu>. [ F., prop. p. p. of apercevoir to perceive. ] 1. A first view or glance, or the perception or estimation so obtained; an immediate apprehension or insight, appreciative rather than analytic. [ 1913 Webster ]

The main object being to develop the several aperçus or insights which furnish the method of such psychology. W. T. Harris. [ 1913 Webster ]

A series of partial and more or less disparate aperçus or outlooks; each for itself a center of experience. James Ward. [ Webster 1913 Suppl. ]

2. Hence, a brief or detached view; conspectus; sketch. [ Webster 1913 Suppl. ]

‖n. [ Native name. ] (Zool.) The wild Guinea pig of Brazil (Cavia aperea). [ 1913 Webster ]

a. [ L. aperiens, p. pr. of aperire to uncover, open; ab + parire, parere, to bring forth, produce. Cf. Cover, Overt. ] (Med.) Gently opening the bowels; laxative. -- n. An aperient medicine or food. Arbuthnot. [ 1913 Webster ]

a. [ Cf. F. apéritif, fr. L. aperire. ] Serving to open; aperient. Harvey. [ 1913 Webster ]

a. [ OF. apert, L. apertus, p. p. of aperire. See Aperient, and cf. Pert, a. ] Open; evident; undisguised. [ Archaic ] Fotherby. [ 1913 Webster ]

adv. Openly. [ Obs. ] Chaucer. [ 1913 Webster ]

n. [ L. apertio. ] The act of opening; an opening; an aperture. [ Archaic ] Wiseman. [ 1913 Webster ]

adv. Openly; clearly. [ Archaic ] [ 1913 Webster ]

n. Openness; frankness. [ Archaic ] [ 1913 Webster ]

n. [ L. apertura, fr. aperire. See Aperient. ] 1. The act of opening. [ Obs. ] [ 1913 Webster ]

2. An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall. [ 1913 Webster ]

An aperture between the mountains. Gilpin. [ 1913 Webster ]

The back aperture of the nostrils. Owen. [ 1913 Webster ]

3. (Opt.) The diameter of the exposed part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture. [ 1913 Webster ]

☞ The aperture of microscopes is often expressed in degrees, called also the angular aperture, which signifies the angular breadth of the pencil of light which the instrument transmits from the object or point viewed; as, a microscope of 100° aperture. [ 1913 Webster ]

n.; pl. Aperies. 1. A place where apes are kept. [ R. ] Kingsley. [ 1913 Webster ]

2. The practice of aping; an apish action. Coleridge. [ 1913 Webster ]

v. t. [ F. apercevoir, fr. L. ad + percipere, perceptum, to perceive. See Perceive. ] To perceive; to comprehend. Chaucer. [ 1913 Webster ]

n. [ Pref. ad- + perception: cf. F. apperception. ] (Metaph.) The mind's perception of itself as the subject or actor in its own states; perception that reflects upon itself; sometimes, intensified or energetic perception. Leibnitz. Reid. [ 1913 Webster ]

This feeling has been called by philosophers the apperception or consciousness of our own existence. Sir W. Hamilton. [ 1913 Webster ]

n. Peril. [ Obs. ] Shak. [ 1913 Webster ]

v. i. [ imp. & p. p. Appertained p. pr. & vb. n. Appertaining. ] [ OE. apperteinen, apertenen, OF. apartenir, F. appartenir, fr. L. appertinere; ad + pertinere to reach to, belong. See Pertain. ] To belong or pertain, whether by right, nature, appointment, or custom; to relate. [ 1913 Webster ]

Things appertaining to this life. Hooker. [ 1913 Webster ]

Give it unto him to whom it appertaineth. Lev. vi. 5. [ 1913 Webster ]

n. That which appertains to a person; an appurtenance. [ Obs. or R. ] Shak. [ 1913 Webster ]

{ } n. See Appurtenance. [ 1913 Webster ]

n. That which belongs to something else; an appurtenant. [ Obs. ] Shak. [ 1913 Webster ]

a. Belonging; appertaining. [ Now usually written appurtenant. ] Coleridge. [ 1913 Webster ]

a. [ OE. aspre, OF. aspre, F. âpre, fr. L. asper rough. ] Rough; rugged; harsh; bitter; stern; fierce. [ Archaic ] “An asper sound.” Bacon. [ 1913 Webster ]

‖n. [ L. spiritus asper rough breathing. ] (Greek Gram.) The rough breathing; a mark (&asper_;) placed over an initial vowel sound or over ρ to show that it is aspirated, that is, pronounced with h before it; thus "ws, pronounced "rh`twr, pronounced [ 1913 Webster ]

‖ n. [ F. aspre or It. aspro, fr. MGr. 'a`spron, 'a`spros, white (prob. from the whiteness of new silver coins). ] A Turkish money of account (formerly a coin), of little value; the 120th part of a piaster. [ 1913 Webster ]

v. t. [ imp. & p. p. Asperated; p. pr. & vb. n. Asperating. ] [ L. asperatus, p. p. of asperare, fr. asper rough. ] To make rough or uneven. [ 1913 Webster ]

The asperated part of its surface. Boyle. [ 1913 Webster ]

n. The act of asperating; a making or becoming rough. Bailey. [ 1913 Webster ]

‖n. [ L., Thou shalt sprinkle. ] (R. C. Ch.) (a) The service or ceremony of sprinkling with holy water. (b) The brush or instrument used in sprinkling holy water; an aspergill. [ 1913 Webster ]

a. [ Aspergillum + -form. ] (Bot.) Resembling the aspergillum in form; as, an aspergilliform stigma. Gray. [ 1913 Webster ]

{ ‖ } n. [ LL. aspergillum, fr. L. aspergere. See Asperse, v. t. ] 1. The brush used in the Roman Catholic church for sprinkling holy water on the people. [ Also written aspergillus. ] [ 1913 Webster ]

2. (Zool.) See Wateringpot shell. [ 1913 Webster ]