lineal, lined, long, extended in a line, elongated, resembling a thread, continuing, unintermitting, looking like a line, rectilinear, successive, in the direction of a line, undeviating, narrow, threadlike, outstretched, extended; see also direct 1, straight 1.
"linear." YourDictionary, n.d. Web. 13 June 2018. <http://thesaurus.yourdictionary.com/LINEAR>.
linear. (n.d.). Retrieved June 13th, 2018, from http://thesaurus.yourdictionary.com/LINEAR