[ ə'ki:n ]
■ noun Botany a small, dry one-seeded fruit that does not open to release the seed.
Origin
C19: from mod. L. achaenium , from a- 'not' + Gk khainein 'to gape'.
ACHENE
Meaning of ACHENE in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004