a·chene also a·kene 
(ā-kēn)
(ā-kēn)n.
A small, dry, indehiscent one-seeded fruit with a thin wall, as in a sunflower.
[New Latin achēnium : Greek a-, without; see A-1 + Greek khainein, to yawn.]
a·cheni·al (-nē-əl) adj.
acheneachenes on a strawberry