Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.


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·che′ni·al (-nē-əl) adj.


(əˈkiːn) or


(Botany) a dry one-seeded indehiscent fruit with the seed distinct from the fruit wall. It may be smooth, as in the buttercup, or feathery, as in clematis. Also called: achenium
[C19: from New Latin achaenium that which does not yawn or open, from a-1 + Greek khainein to yawn]
aˈchenial, aˈkenial adj


(eɪˈkin, əˈkin)

any small, dry, hard, one-seeded, indehiscent fruit.
[1835–45; < New Latin achaenium=a- a-6 + Greek chaín(ein) to gape + New Latin -ium -ium2]
a•che′ni•al, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.achene - small dry indehiscent fruit with the seed distinct from the fruit wallachene - small dry indehiscent fruit with the seed distinct from the fruit wall
key fruit, samara, key - a winged often one-seed indehiscent fruit as of the ash or elm or maple
fruit - the ripened reproductive body of a seed plant
References in periodicals archive ?
Achene shape has been shown to influence the within-year timing of dormancy in this species (long, thin achenes lose dormancy faster in the laboratory and germinate earlier in the field than short, wide ones; Venable et al.
To overcome achene dormancy, acid scarification was performed by immersion in [H.
The rachilla is detectable only from the peg-like scar left after the achene falls, and the presence of the prophyll (Hooper, 1986).
four irrigations were applied 25 days after sowing (DAS), at bud initiation, flower initiation and achene formation with no ABA spray.
Separate threshing was done for each experimental unit to obtain data regarding achene yield for each treatment.
In addition to the small and rarely seen flowers, an unusual structure of the achene provides an important taxonomic characteristic.
3 mm wide at the base, sessile or on an inconspicuous rib at the apex of the achene, depressed, with the central part minutely conic or pyramidal, acute, dark-brown.
Perianth comprised of both bladed and bladeless tepals, the latter represented by bristles reaching at least to the middle of the stipe of the achene.
It would be nice if that strawberry were locally grown and in season, but even one of those giants from a factory farm can teach a student what an achene is, if not what a strawberry should really taste like.
Comparison of achene characteristics and combining ability of branching and non-brraching near-isogenic sunflower restorer lines.