Obs. [ad. med.L. *longātiōn-em, n. of action f. longāre to prolong, f. longus LONG a.]

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  1.  Lengthening, elongation.

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1597.  A. M., trans. Guillemeau’s Fr. Chirurg., 38/1. Strippe vp the skinne and the muscles, as well for the longation of the skinne, as lengtheninge of the Vaynes and Arteryes.

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  2.  The longer process for transmuting metals.

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1584.  R. Scot, Discov. Witchcr., XIV. v. (1886), 301. In this art [Alcumystrie] there are two waies, the one called longation, the other curtation.

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1606.  N. Breton, Sir P. Sydney’s Ouránia, K 2 b. With great expence and longation, Must come this metals alteration.

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1671.  H. M., trans. Erasm. Colloq., 259. Longation, and … Curtation.

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