IPA: /ˈpɛrɪˌkɑrp/
KK: /ˈpɛrɪˌkɑrp/
The outer layer or wall of a fruit that develops from the ovary of a flower, often protecting the seeds inside.
The pericarp of the apple is thick and fleshy, making it a popular fruit.
Pericarp is formed from "peri-" (meaning around) and "karpos" (meaning fruit). The word describes the part of a fruit that surrounds the seeds, hence the outer layer of the fruit.
Think of something that goes 'around' ('peri-') the 'fruit' ('karpos') — that's why pericarp refers to the outer layer of a fruit.