What is the term used to describe the distance between the seam line and the edge of the fabric?

Seam allowance is defined as the distance between the seam line—the location where the two pieces of fabric are sewn together—and the raw edge of the fabric. This area is essential in garment construction as it provides the necessary fabric margin for sewing the seam and allows for adjustments or alterations without compromising the integrity of the garment. The seam allowance is crucial because it helps determine how a finished seam will look and function, including factors related to fit, strength, and overall design.

The other terms do not pertain to this specific measurement. Stitch length refers to the distance between each stitch in a seam, which influences the strength and appearance of the stitching rather than the fabric's edge. Fabric width pertains to the measurement of the fabric itself, typically indicating how wide the fabric is off the roll, while seam type relates to the specific method of sewing two pieces of fabric together, such as straight, zigzag, or French seams.