Source : Webster's Revised Unabridged Dictionary (1913)

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

Source : WordNet®

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