A mathematical dictionary [electronic resource] : or, a compendious explication of all mathematical terms, abridg'd from Monsieur Ozanam, and others. With a translation of his preface; and an Addition of several easie and useful Abstracts; as plain Trigonometry, Mechanicks, the first Properties of the three Conick Sections, &c. To which is added, an appendix, containing the Quantities of all Sorts of Weights and Measures; the Explanation of the Characters used in Algebra. Also the Definition and Use of the Principal Mathematical Instruments, and the Instruments themselves curiously Engraven on Copper. Written by J. Ralphson, F. R. S.