: to cause (as a liquid) to permeate something by penetrating its pores or interstices infiltrate tissue with a local anesthetic. 2: to pass into or through (a substance) by filtering or permeating. intransitive verb.
Yarn is a long continuous length of interlocked fibres, suitable for use in the production of textiles, sewing, crocheting, knitting, weaving, embroidery, and ropemaking. Thread is a type of yarn intended for sewing by hand or machine.
Novelty yarns. From top to bottom: Regular yarn, braided yarn, ladder yarn and ribbon yarn. Novelty yarns include a wide variety of yarns made with unusual features, structure or fiber composition such as slubs, inclusions, metallic or synthetic fibers, laddering and varying thickness introduced during production.