The Collaborative International Dictionary of English v.0.48:

Lineation \Lin`e*a"tion\ (l[i^]n`[-e]*[=a]"sh[u^]n), n. [L.
   lineatio the drawing of a line, fr. lineare.]
   Delineation; a line or lines.
   [1913 Webster]

WordNet (r) 3.0 (2006):

lineation
    n 1: the line that appears to bound an object [syn: outline,
         lineation]
    2: the act of marking or outlining with lines