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Definition of: achene
(ā·kēn′) noun Bot.
A small, dry, indehiscent pericarp containing one seed, as in the dandelion, buttercup, etc.: also spelled akene. Also a·che·ni·um (ā·kē′·nē·əm) plural ·ni·a (-nē·ə). [<NL achenium <A-4 not + Gk. chainein gape, recoil]
—a·che′·ni·al adjective
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