a·chene also a·kene (ā-kēn)
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.
(click for a larger image)achene
achenes on a strawberry
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.