Final answer:
CAD stands for Computer-Aided Design in engineering. It involves using computer software to represent the geometry of designed objects. Engineers use CAD tools to create and analyze designs.
Step-by-step explanation:
CAD stands for Computer-Aided Design in engineering. It is the practice of using computer software to represent the geometry of designed objects. Engineers use CAD tools to create and analyze designs, allowing them to manage complexity and ensure the accuracy of their designs.