Pi (3.14159) is the ratio of the circumference of a circle to its diameter, approximately 22 divided by 7, or about 3.14159.
Pigment Dyes. It dyes without affinity for fibre and held to fabric with resins. They are available in almost any colour used extensively in the jeans-wear industry by fabric dyers who want to create materials that fade.
Pima cotton is fibre grown in Peru and America where the fibre length is the long, luxurious and beautiful quality of cotton, the best available after Sea Island and Egyptian cotton.
Pineapple fibre is a fruit and belongs in a group of natural fibre, see the Textile fibre overview of different textures from human-made to natural fibres. Piña is a durable white or creamy cobweb-like fibre drawn from tall leaves of an indigenous pineapple plant. The thread is hand stripped from the stalks in lengths of about 18 inches to 3 feet, sun-bleached, hand-knotted and spun.
Piqué is a heavy cotton material woven in corded or figured effects. The goods for purposes such as ladies’ tailor-made suits, vesting’s, shirt fronts, cravats, bedspreads, and the like. It was initially woven in diamond-shaped designs to imitate quilting.