Definitions

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

  • noun A membranous structure within a chloroplast made up of stacks of thylakoids.

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

  • noun biology a stacklike structure in plant chloroplasts that contain chlorophyll; the site of photosynthesis

Etymologies

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

[Latin grānum, seed; see grain.]

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Examples

  • Thylakoids, containing chlorophyll and other accessory pigments, are in stacks called granum (grana, plural)

    Recently Uploaded Slideshows guest7d8a25 2009

  • These derive from the same Latin word granum grain: The reference is to the many fragments resulting from the detonation of a shell.

    news.beiruter.com - A directory of Lebanese blogs 2009

  • These words are merely a commentary on those of the Master: Nisi granum frumenti cadens in terram mortuum fuerit, ipsum solum manet: "unless a grain of wheat falls into the earth and dies, it remains alone" Jn 12:24.

    Archive 2007-01-01 2007

  • Number 322 Pupa granum is now Granopupa granum, whilst No.

    Archive 2006-11-01 AYDIN 2006

  • Number 322 Pupa granum is now Granopupa granum, whilst No.

    Rossmässler's Iconographie AYDIN 2006

  • Jacet granum opressum palea, justus caesus pravorum framea.

    12/01/2003 - 01/01/2004 John 2003

  • The ear of wheat (in Latin spica, obsoletely speca, from spe, hope) should not be the only hope of the husbandman; its kernel or grain (granum from gerendo, bearing) is not all that it bears.

    Walden 2004

  • (Amomum granum Paradisi), fresh or old, is not only a toothstick, but a fetish of superior power when carried on journeys.

    Two Trips to Gorilla Land and the Cataracts of the Congo 2003

  • If _coarse_ be not another form of _gross_, (Fr. _gros_, _grosse_,) then there is no connection between _corn_ and _granum_, or _horse_ and

    The Atlantic Monthly, Volume 06, No. 34, August, 1860 Various

  • [290] This statement ought to be taken with more than one _granum salis_, especially as Mrs. Somerville assures us that the Chinese had made advances in the science of astronomy 1,100 years before the

    Moon Lore Timothy Harley

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