endocarp
noun
[ ˈɛndə(ʊ)kɑːp ]
• the innermost layer of the pericarp which surrounds a seed in a fruit. It may be membranous (as in apples) or woody (as in the stone of a peach or cherry).
Origin:
early 19th century: from endo- ‘within’ + a shortened form of pericarp.
