linealiter

līnĕālis, e, adj. [linea], consisting of lines, made with lines, lineal (post-class.):

ambitus lineales,

Amm. 22, 16, 7.—Hence, adv.: līnĕālĭter, in the manner of lines, by means of lines:

quos (circulos) linealiter feci,

Mart. Cap. 8, § 834.