tractory
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Tractory — Tract o*ry, n. [L. tractorius of drawing, fr. trahere, tractum, to draw.] (Geom.) A tractrix. [1913 Webster] … The Collaborative International Dictionary of English
tractory — … Useful english dictionary
1692 in science — The year 1692 in science and technology:Events* In the American colonies, the Salem Witch trials of 1692 develop, following 250 years of witch hunts in Europe.Mathematics* The tractrix, sometimes called a tractory or equitangential curve, is… … Wikipedia
