Creasing

Part of speech: verb

Pronunciation: /ˈkɹiːsɪŋ/

Definitions

1. The action of creating a folded line or ridge in a surface occurs alongside the condition of material exhibiting wrinkles or folds, resulting in marks from deformation or compression during use
2. The process of forming a sharp fold or line by bending or pressing a material
3. Creating a visible ridge or raised line on a surface by folding or pressure application

Etymology: "Creasing" is the present participle of "crease", and the verb grew out of a noun that once meant something quite different from a fold. The noun came from "creast", a form of the Middle English "crest", meaning the ridge or top of something, such as a helmet or a hill. The crest sense is still visible in the word's shape, since a crease is a ridge formed when cloth or paper bends over on itself. The link to "crest" is the root of the story: a line pressed into fabric or paper is essentially a small raised ridge where the material has folded. Over time the word narrowed from the broad idea of a top or peak to the specific mark left by bending, and that narrower meaning is the one that gave us the verb.

Synonyms: folding, wrinkling