achene

a·chene also a·kene Audio Help (ā-kēn')

n. A small, dry, indehiscent one-seeded fruit with a thin wall, as in the sunflower.

[New Latin achēnium : Greek a-, without; see a-¹ + Greek khainein, to yawn.]
a·che'ni·al (-nē-əl) adj.

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