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This breaking up occurs in at least seven stages; the successive main products have been studied and are called radium emanation or exradio, radium A, radium B, radium C, etc. (The emanation is a heavy gas, the later products are solids.) These products are regarded as unstable elements, each with an atomic weight a l…

A lesson studied or recited for a second time. Bill of review (Equity), a bill, in the nature of proceedings in error, filed to procure an examination and alteration or reversal of a final decree which has been duly signed and enrolled. Wharton. -- Commission of review (Eng. Eccl. Law), a commission formerly granted b…

light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope.

Planned with study; deliberate; studied. For the frigid villainy of studious lewdness, . . . with apology can be invented Rambler.

Any particular branch of learning that is studied; any object of attentive consideration. The Holy Scriptures, especially the New Testament, are her daily study. Law. The proper study of mankind is man. Pope.