Twist
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Description
A descriptive term for yarns used to indicate the slope direction and the spiral frequency. When a yarn is held vertically, the slope direction is designated by the terms: S-twist (if the spiral forms an S), Z-twist (if the spiral forms a Z), or I-twist (if there is no apparent twist). The spiral frequncy is designated by counting the turns per inch (tpi), turns per centimeter (tpcm), or turns per meter (tpm).
Synonyms and Related Terms
S-twist (reverse twist, left twist, left-handed twist, filling twist); Z-twist (regular twist, right twist, right-handed twist, warp twist); I-twist (zero-twist, twistless, untwisted); tpi; tpcm; tpm; torsión (Esp.)