liniaris

līnĕāris, e (or līnĭāris ), adj. [id.], of or belonging to lines, consisting of lines, linear:

pictura,

the art of drawing with lines, without colors, Plin. 35, 3, 5, § 16:

ratio,

the science of lines, geometry, Quint. 1, 10, 36:

probatio,

a proving by means of lines, a mathematical demonstration, id. 1, 10, 49.— Adv.: līnĕārĭter, by lines, Boëth. Inst. Music. 3, 9 init.