Definify.com

Webster 1913 Edition

(lĭnˊē̍-ā′shŭn)

Noun.

[L.

lineatio

the drawing of a line, fr.

lineare

Delineation; a line or lines.

Noun.

Draught; delineation, which see.

See also: linéation

lineation ‎(plural lineations)

(geology) A linear feature in rock, often structural
magnetic lineations
(literature) The way in which line breaks are inserted in a poem
- 2001, Shira Wolosky, The Art of Poetry, ISBN 0195138708, page 26-27:
  Lineation is very much a matter of syntax, organizing the poem's grammar across its lines in ways significant and central to the poem's meaning.