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Teinoscope :: Teinoscope (n.) An instrument formed by combining prisms so as to correct the chromatic aberration of the light while linear dimensions of objects seen through the prisms are increased or diminished; -- called also prism telescope.

Aplanatic :: Aplanatic (a.) Having two or more parts of different curvatures, so combined as to remove spherical aberration; -- said of a lens..

Doublet :: Doublet (a.) An arrangement of two lenses for a microscope, designed to correct spherical aberration and chromatic dispersion, thus rendering the image of an object more clear and distinct..

Deliration :: Deliration (n.) Aberration of mind; delirium.

Diurnal :: Diurnal (a.) Daily; recurring every day; performed in a day; going through its changes in a day; constituting the measure of a day; as, a diurnal fever; a diurnal task; diurnal aberration, or diurnal parallax; the diurnal revolution of the earth..

Aberration :: Aberration (n.) A partial alienation of reason.

Delirium :: Delirium (n.) A state in which the thoughts, expressions, and actions are wild, irregular, and incoherent; mental aberration; a roving or wandering of the mind, -- usually dependent on a fever or some other disease, and so distinguished from mania, or madness..

Aberration :: Aberration (n.) The passage of blood or other fluid into parts not appropriate for it.

Aberrational :: Aberrational (a.) Characterized by aberration.

Aberration :: Aberration (n.) The convergence to different foci, by a lens or mirror, of rays of light emanating from one and the same point, or the deviation of such rays from a single focus; called spherical aberration, when due to the spherical form of the lens or mirror, such form giving different foci for central and marginal rays; and chromatic aberration, when due to different refrangibilities of the colored rays of the spectrum, those of each color having a distinct focus..

Deliriant :: Deliriant (n.) A poison which occasions a persistent delirium, or mental aberration (as belladonna)..

Aberration :: Aberration (n.) A small periodical change of position in the stars and other heavenly bodies, due to the combined effect of the motion of light and the motion of the observer; called annual aberration, when the observer's motion is that of the earth in its orbit, and daily or diurnal aberration, when of the earth on its axis; amounting when greatest, in the former case, to 20.4'', and in the latter, to 0.3''. Planetary aberration is that due to the motion of light and the motion of the planet re

Aberration :: Aberration (n.) The act of wandering; deviation, especially from truth or moral rectitude, from the natural state, or from a type..

Aberration :: Aberration (n.) The producing of an unintended effect by the glancing of an instrument, as when a shot intended for A glances and strikes B..

Aplanatism :: Aplanatism (n.) Freedom from spherical aberration.

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