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

Serration :: Serration (n.) One of the teeth in a serrate or serrulate margin.

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

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

Erration :: Erration (n.) A wandering; a roving about.

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

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

Serration :: Serration (n.) Condition of being serrate; formation in the shape of a saw.

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..

Pererration :: Pererration (n.) A wandering, or rambling, through various places..

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..

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

Deterration :: Deterration (n.) The uncovering of anything buried or covered with earth; a taking out of the earth or ground.

Oberration :: Oberration (n.) A wandering about.

Serrature :: Serrature (n.) One of the teeth in a serrated edge; a serration.

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..

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..

Atterration :: Atterration (n.) The act of filling up with earth, or of forming land with alluvial earth..

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.

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

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