What is the meaning of the popcorn hull?

The popcorn hull, also known as the pericarp, is the hard outer shell of a popcorn kernel. It serves to contain moisture and pressure until the kernel is heated, causing the moisture inside to turn into steam. When the pressure becomes too great, the hull bursts, leading to the characteristic popping of popcorn. This unique structure is crucial for achieving the fluffy texture that popcorn is known for.