used as combining form of L. līnea line; as in Lineo-circular a. Math., said of an apparatus for converting rectilinear into circular movement. Lineograph [see -GRAPH], an instrument for drawing lines of a definite character (Cent. Dict.). Lineo-linear a. Math., linear with respect to each of two different variables or sets of variables. Lineo-polar a. Math., produced by taking the (n–1)-th polar of a locus with respect to a function of the nth order; so called because such a polar of a point is a line (Cent. Dict.).
1858. Cayley, in Coll. Math. Papers (1889), II. 517. The lineo-linear covariant becomes the lineo-linear invariant ab′–a′b.
1874. Sylvester, in Proc. Roy. Instit., VII. 186, note. In the lineo-circular or parallel-motion adjustment imagine the connecters to be detached from the angles of the diamond, and [etc.].
