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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 ?
By examining the relative development of these achene features, one can often evaluate whether a Cannabis plant is merely recently escaped from cultivation or derived from plants that have lived in the wild for a considerable period and consequently evolved wild characteristics.
Fructus arctii, called "Niubangzi" in China (Great burdock achene in English), is a well-known Chinese Materia Medica.
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).
Disturbed, rough and open ground Cirsium arvense creeping achene w -- 2 (L.
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.
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.
Piras MR, Magnano I, Canu ED, Paulus KS, Satta WM, Soddu A, Conti M, Achene A, Solinas G, Aiello I.
In general, calyx morphology is well adapted to achene dispersal (Bouman & Meeuse, 1992) which, in the Mediterranean region, often occurs by diplochory (barochory and anemochory or myrmecochory).
Achene appearance and size were generally uniform throughout the collection areas.
For human consumption of the tasty embryo, the achene is hulled (= dehulled).
We observed also the most efficient process of achene maturation for this species (Tab.