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tractory
tractory, a. and n. rare. (ˈtræktərɪ) [ad. L. tractōri-us of or for drawing, f. tract-, ppl. stem of trahĕre to draw: see -ory.] † A. adj. Serving for traction; tractive. Obs.1684 tr. Bonet's Merc. Compit. x. 368 He shews the various uses of his..tractorie Machine which he invented. B. n. † 1. Old n...
Oxford English Dictionary
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tractatorian
tractaˈtorian, a. Ch. Hist. ? Obs. [f. late L. tractātōri-us (f. prec.) + -an.] In tractatorian or tractatory letter, late L. epistola tractatoria, a letter from a synod or council of bishops, so called from L. tractātus in the sense of a conference treating of sacred subjects. See Du Cange. Also ˈt...
Oxford English Dictionary
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1692 in science
Mathematics
The tractrix, sometimes called a tractory or equitangential curve, is first studied by Christiaan Huygens, who gives it its name.
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syntractrix
‖ syntractrix Geom. (sɪnˈtræktrɪks) [mod.L., f. syn-1 + tractrix.] The locus of a point on the tangent to a tractrix at a constant distance from its intersection with the axis. Also synˈtractory [tractory n. 3].1820 G. Peacock Examples Diff. Calc. i. xxiii. 175 Syntractory. 1852 G. Salmon Higher Pla...
Oxford English Dictionary
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tractrix
‖ tractrix Geom. (ˈtræktrɪks) Pl. ˈtractrices (-ɪsiːz). [mod.L. (Huygens) fem. of tractor: see tractor, and cf. directrix.] A curve such that the intercept on the tangent between its point of contact and a fixed straight line is constant; so called as being traced by the centre of gyration of a rigi...
Oxford English Dictionary
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extractory
exˈtractory, a. [ad. L. extractōrius, f. extrahĕre: see extract v. and -ory.] Of or pertaining to an extractor; or to extraction.1727 Bailey vol. II, Extractory, that hath the nature or power to draw out. 1775 in Ash. 1891 Punch CI. 179/1 Reviewed it in this..extractory and arbitrary fashion.
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tow
▪ I. tow, n.1 (təʊ, Sc. tʌu, tou) Forms: 4–7 towe, (5 toow, 6 toa, 7–8 toe), 5–6 tawe, 5– tow. [Known only from last quarter of 14th c. Origin doubtful: perh. related to ON. tó n. uncleansed wool or flax, unworked fibre of thread; which is doubtfully connected with OE. *tow- spinning, weaving, in to...
Oxford English Dictionary
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