What does Lycra mean?

Dupont’s trademark for spandex fibre.

Heddels explains Lycra

Used in many types of garments and items, Lycra is the world’s most recognized brand of spandex. In fact, the term Lycra is often used interchangeably with spandex even though it is essentially a brand name.

Dupont developed the product in 1958 as an substitute for rubber in corsets.

Additional Resources

Image of lycra material: