Definition of "indagation" []

• Investigation, inquiry. (noun)

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• "Yet he exhorted the true “naturalist” not to “let the search or knowledge of final causes make him neglect the industrious indagation [i.e., investigation] of effi - cients,” and he implied that the naturalist's principal aim was the discovery of efficient causes."
• "It was not discovered by the severe indagation and watchfulness of ministers of state from foreign intelligence, -- the usual way of discovering such plots."
• "Hence things philosophical, and of a deep rational indagation, find great acceptance in the world — as, in their proper place, they do deserve."