Legal Definition
A material defect refers to a significant flaw, error, or deficiency within a product, service, or contract that substantially impairs its intended function or value. In legal contexts, it signifies a failure in the core substance of an agreement or product that renders the entire thing defective.
Plain-English Translation
Imagine something is broken or wrong in a big deal or a product. It means there's a serious problem with what was promised or delivered, making the whole thing faulty.