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line (līn) n.
1. The path traced by a moving point.
2. A thin continuous mark, as that made by a pen, pencil, or brush applied to a surface.
3. A crease in the skin, especially on the face; a wrinkle.
4. In anatomy, a long narrow mark, strip, or streak distinguished from adjacent tissue by color, texture, or elevation.
5. A real or imaginary mark positioned in relation to fixed points of reference.
6. A border, boundary, or demarcation.
7. A contour or an outline.
8. A mark used to define a shape or represent a contour.
9. Any of the marks that make up the formal design of a picture.
10. A cable, rope, string, cord or wire.
11. A general method, manner, or course of procedure.
12. A manner or course of procedure determined by a specified factor.
13. An official or prescribed policy.
14. Ancestry or lineage.
15. A series of persons, especially from one family, who succeed each other.
© The American Heritage® Stedman's Medical Dictionary