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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 ?
Achenes roundly trigonous to terete, globose or ellipsoid; surface smooth, tuberculate (warty), pitted, or lobed, rarely pubescent; hypogynium disk-like, lobed or entire, sometimes absent.
we did not control for possible self-pollinations caused by bagging or unbagging capitula for diurnal and nocturnal pollination treatments, and we did not detect a significant difference in production of achenes in these treatments compared to wind and control treatments, as would be expected if manipulation of capitula had increased self-pollination.
Phenolic composition and antioxidant activities in flesh and achenes of strawberries (Fragaria X ananassa).
Solidago gigantea allocates most of its energy into sexual reproduction and produces large flower heads and achenes, contributing to its invasiveness (Abrahamson et al.
The achenes are produced on the outer surface to the receptacle, and each one is responsible for a region of growth necessary to produce a normal accessory fruit.
puberulent, notched and awned), and shorter achenes (0.
Achenes oblong, less than 3 times as long as wide; majority of perigynia less than 4.
8 vegetation (1) Plant parts identified included achenes (A), rhizomes (B), seed capsules (C), florets and flowers (F), leaves (L), perigynia (P), seeds (S), silicles (SC), scales (SL), spikelets (SP), and siliques (SQ).
With the exception of Potamogeton achenes which were determined using the manuscript by Jessen (1955), subfossil seeds and achenes were identified using the text by Montgomery (1977).
2, with slightly larger leaves, 3-5 leaflets per leaf, leaflets broadly lanceolate, and with larger achenes (5.
1], days to start flowering (DFL) based on the date of flowering in R5, chapter length (CL) in cm, weight of a thousand achenes (WTA) in g, height (H) in cm, and oil content (OilC) in % were evaluated.