Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A small, dry, indehiscent one-seeded fruit with a thin wall, as in a sunflower.

from The Century Dictionary.

  • noun English form of achenium. Also spelled akene.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Bot.) A small, dry, indehiscent fruit, containing a single seed, as in the buttercup; -- called a naked seed by the earlier botanists.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun botany A small, dry, indehiscent fruit, containing a single seed, as in the buttercup; -- called a naked seed by the earlier botanists

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun small dry indehiscent fruit with the seed distinct from the fruit wall

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin achēnium : Greek a-, without; see a– + Greek khainein, to yawn.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From French akène and its source, Latin achena, from Ancient Greek ἀ- ("a-") + χαίνω (chainō, "to gape").

Examples

  • Both species have abundant seed-set and some very effective means for dispersal through achene adhesion to cloth, animal fur or wool (Fig. 4). —

    The Volokh Conspiracy » “Two New Alien Species of Bidens Have Been Recorded in Bulgaria”

  • Both species have abundant seed-set and some very effective means for dispersal through achene adhesion to cloth, animal fur or wool Fig.

    The Volokh Conspiracy » “Two New Alien Species of Bidens Have Been Recorded in Bulgaria”

  • These are called achenes, and each achene is an individual fruit containing a single seed.

    Archive 2006-03-01

  • These are called achenes, and each achene is an individual fruit containing a single seed.

    At My Table

  • Above the ground she stores it in drupe and pome and berry, nut and nutlet and achene, and below the ground in rootstock and rhizome, corm and tuber, pumping them full with strokes quick and strong in these grand climacteric days of the summer.

    Some Summer Days in Iowa

  • Fruit a trigonous, biconvex, or biconcave achene; seed with straight or curved embryo and copious endosperm.

    Find Me A Cure

  • Fruit: A small achene tipped with long feathery white bristles

    Find Me A Cure

  • Fruit a trigonous, biconvex, or biconcave achene; seed with straight or curved embryo and copious endosperm.

    Find Me A Cure

  • This structure allows dispersal of the achene, a single seed produced by each female flower, to other sites by clasping to the hairs, or feathers, of any animal (or hairy tramper) passing by.

    Museum Blogs

  • Fruit is red to brown achene with soft white hairs that helps in wind dispersal.

    Find Me A Cure

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