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Inseam
Seam inside the leg of pants that runs from the crotch to the hem.
Interfacing
Fabric used between layers of fabric to provide stabilization and form. Usually used in collars, cuffs, plackets, some waistbands and pockets, and facings. Interfacing can be fusible (using your iron to release an adhesive) or not (sewn in).
Interlining
A layer of fabric added to a lining for warmth.
Interlining
A soft fluffy fabric placed between the face fabric and lining to help insulation.
Inverted Pleat
A flat pleat with the extra fabric to the wrong side.
Iron
An iron is a tool that is used to straighten or press fabric. The iron can be used with or without steam. It is a very important tool for the sewing room.
Ironing
Ironing is done by moving the iron back and forth over fabric. Ironing is generally not utilized when sewing. See "press".
