lineation

lin·e·a·tion

L0181700 (lĭn′ē-ā′shən)n.1. The act of marking or outlining with lines.2. An outline.3. An arrangement of lines.

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[Middle English lineacioun, from Latin līneātiō, līneātiōn-, from līneātus, past participle of līneāre, to make straight, from līnea, thread, line; see line¹.]

lineation

(ˌlɪnɪˈeɪʃən) n1. the act of marking with lines2. an arrangement of or division into lines3. an outline or contour4. (Geological Science) any linear arrangement involving rocks or minerals, such as a parallel arrangement of elongated mineral grains

lin•e•a•tion

(ˌlɪn iˈeɪ ʃən)

n. 1. an act or instance of marking with or tracing by lines. 2. a division into lines. 3. an outline or delineation. 4. an arrangement or group of lines. [1350–1400; Middle English < Late Latin]

Thesaurus

Noun	1.	lineation - the line that appears to bound an objectoutlineboundary, bounds, bound - the line or plane indicating the limit or extent of somethingcoastline - the outline of a coastsilhouette - an outline of a solid object (as cast by its shadow)skyline - the outline of objects seen against the sky
	2.	lineation - the act of marking or outlining with linesmarking - the act of making a visible mark on a surface