elasticate

To elasticate something is to add elastic so it can stretch and then return to shape. Usually, this means sewing in elastic thread or mixing elastic material into fabric. Think about a comfortable pair of jogger pants: a tailor or manufacturer may elasticate the waistband so it fits closely but still stretches when you move. You would not usually say that skin or rubber "elasticates" by itself. Instead, the word is mostly used when talking about how clothing or textile products are made more flexible and comfortable.

To elasticate means to provide a material or garment with elastic properties, typically by inserting or weaving in elastic bands or threads. It is a functional, technical term most frequently found in tailoring, manufacturing, and textile engineering. Unlike simply "stretching" (which is the result), "elastication" is the process of building that capacity for flexible recovery into the item itself.

For example, a textile manufacturer might elasticate a woven fabric to create stretch denim, making jeans more comfortable for daily wear. A clothing maker may also elasticate a hem, cuff, or waistband so the finished piece fits better and moves more easily with the body. The word comes directly from "elastic" and points to the act of giving something that quality. You usually see it used as a deliberate action done to fabric or clothing, not as something that happens on its own. So, the next time you enjoy the comfort of a stretchy waistband, remember that the fabric did not just become flexible by chance; someone designed it that way and elasticated it on purpose.