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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 ?
The superiority of higher plant population for growth (leaf area index, leaf area duration, crop growth rate and net assimilation rate), development (days to germination, days to flowering, days to achene formation and days to physiological maturity), yield and yield components might be due to the fact that, there may be more efficient consumption of the input resources (nutrients, space, water and light) as compared to low plant population.
Highest number of achene's h ad-1 and 1000- achene;s weight was noted by Hybrids S-278 and Hysun-33while hybrid FH-337 gave minimum number of achene's head-1 and lowest 1000- achene's weight.
But even the botanically cognizant casually refer to both true seeds and "seeds with accessories" simply as "seeds." Because practitioners in the sciences need precision when speaking or writing formally, the botanical term of choice for both true seeds as well as those carrying extra parts is disseminule, a catchall term that covers all variations of reproductive packages, botanically known by terms such as aril, achene, capsule, caryopsis, nut, drupe, and true seed (Figure 4).
Kaye (1999) discovered that removing the achene from the winged portion of the anthocarp and then subjecting the achene to alternating temperatures and photoperiods resulted in the highest percentage of germination.
Fruit an achene. Membranaceous pericarp parcially fused to the seed.
seed, achene); notes relevant to the interpretation of the seed weight data" (Royal Botanical Gardens, n.d.).
Effect of basal and side dressed phosphorus on the achene yield and pyrethrins concentration in the achenes of Pyrethrum (Tanacetum cinerariifolium) and on soil and plant phosphorus.
Samples SR05-DH1 and SR05-DH2 contain only one achene from Ranunculus sp.
[46.] Piras MR, Magnano I, Canu ED, Paulus KS, Satta WM, Soddu A, Conti M, Achene A, Solinas G, Aiello I.
The effects of achene dimorphism on the dispersal in time and space in Crepis sancta (Asteraceae).
Description: Opercle of achene keeled and winged, ventral margin wavy, beak ventral.