Corrugated means molded into tight ridges and valleys. You've probably seen corrugated cardboard or corrugated metal roofs.

Materials are put into a corrugated shape to ensure elasticity and strength — cardboard boxes hold their shape because the cardboard is reinforced with a corrugated layer inside the two flat pieces. To remember corrugated, think about corduroy pants — which also have ridges and valleys. If you're lucky enough to have had ribbon candy, that's corrugated as well.

Definitions of corrugated
  1. adjective
    shaped into alternating parallel grooves and ridges
    “the surface of the ocean was rippled and corrugated
    furrowed, rugged
    having long narrow shallow depressions (as grooves or wrinkles) in the surface
Word Family

Test prep from the experts

Boost your test score with programs developed by’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.


  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week


  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week