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.
波型のトタン屋根が雨音を大きく響かせた。
The corrugated tin roof amplified the sound of the rain.
この段ボールは波型の
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.