Elastane is the same as Spandex. Both are yarns that are knit/woven into fabrics, and contribute stretch and recovery properties to the fabric. Spandex is DuPontâs brand, elastane is the generic name.
In Latin 'Libra' are the symbol for the scales, hence the use of lb for weight (and lbs for the multiple),
Einde O'Callaghan:[nq:1]Short question: Why is the weight unit pounds spelled lbs?[/nq]lb is short for librum, which is Latin for pound. The modern plural is lbs. BTW lbs isn't the spelling of the word, it's the abbreviation.