endocarp
Innermost fruit layer
The endocarp is the innermost layer of a fruit's wall, surrounding the seed.
In stone fruits like peaches and cherries, the endocarp is the hard pit; in citrus, it's the membrane around each segment.
The term appears mainly in botany and food science: The endocarp protects the seed during digestion by animals.
Solid earth fragment
core · inner layer · woody · fibrous · calcified · hardened · protective · seed coat
pit
Fruit's hard seed
cherry · olive · mango · almond · apricot · nectarine · date · avocado · lychee · coconut
stone
Solid earth fragment
husk · core · inner layer · woody · fibrous · calcified · hardened · protective · seed coat · lignin
ovary
Female reproductive gland
seed · kernel · cotyledon · endosperm · plumule · radicle · parenchyma · integument · testa