To form parallel ridges and grooves in a surface, making it wavy or wrinkled.
From Latin 'corrugatus,' past participle of 'corrugare' (to wrinkle together), combining 'cor-' (together) and 'rugare' (to wrinkle). The term entered English in the 16th century and became associated with manufacturing processes.
Corrugated cardboard became revolutionary in the 1800s because those ridges make it incredibly strong while using less material—it's why your Amazon boxes don't collapse, and why it's used in everything from shipping to temporary shelters!
Complete word intelligence in one call. Free tier — 50 lookups/day.