(of a surface or hard material) to bend or twist so that the surface is no longer flat or straight
The woman put the clock above the fireplace, and the heat warped it.
Over time, the wooden door began to warp, causing it to no longer fit snugly in its frame.
Excessive heat can cause certain plastics to warp, distorting their original shape.
The intense humidity in the storage room caused the old photographs to warp over the years.
Proper storage in a cool, dry environment helps prevent canvases from warping.