noun which may take the genitive case particle 'no'
corrugated; wave-shaped
Describes a surface or material with a wavy, ridged pattern, like corrugated cardboard or sheet metal.
The corrugated tin roof amplified the sound of the rain.
この段ボールは波型の構造で強度を高めている。
This cardboard has a corrugated structure to increase its strength.
Compound of 波 (なみ, 'wave') and 型 (かた, 'shape, pattern'). The reading かた becomes がた due to rendaku.