胞果是被子植物的一种果实类型，和瘦果类似，是单果类干果中的一种闭果，其成熟果实的果皮发育成薄膜状，干燥且不开裂，果皮与种皮分离。例如部份苋科植物。

An achene (Greek ἀ, a, privative + χαίνειν, chainein, to gape; also sometimes referred to as akene and occasionally achenium or achenocarp) is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not open at maturity). Achenes contain a single seed that nearly fills the pericarp, but does not adhere to it. In many species, what is referred to as the "seed" is actually an achene, a fruit containing the seed. The seed-like appearance is owed to the hardening of the wall of the seed-vessel, which encloses the solitary seed so closely as to seem like an outer coat.