Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A layer of nutritive tissue in the seed of certain flowering plants that is derived from the nucellus and surrounds the embryo.
from The Century Dictionary.
- noun In bot., a name originally proposed by Jussieu for the albumen or nutritive matter stored up in the seeds of plants; by later authors restricted to the albumen which is stored up outside the embryo-sac. Compare
endosperm . - noun The pericarp or even the integuments of a seed.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Bot.) The albumen of a seed, especially that portion which is formed outside of the embryo sac.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun biology The layer of
nutritive tissue , derived from thenucellus , that surrounds theembryo of aseed in someangiosperms .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the nutritive tissue outside the sac containing the embryo in some seeds
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Under this tissue is found with the Nos. 7, 8, and 9, the endosperm or perisperm, containing the gluten and the starch; soluble and insoluble albuminoids, that is to say, the flour.
Scientific American Supplement, No. 275, April 9, 1881 Various
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In some plants the nucellus is not thus absorbed, but itself becomes a seat of deposit of reserve-food constituting the _perisperm_ which may coexist with endosperm, as in the water-lily order, or may alone form a food-reserve for the embryo, as in _Canna_.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 Various
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Seeds in which endosperm or perisperm or both exist are commonly called
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 Various
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Those by which the sulphate of iron is precipitated of a green colour, like the real cinchona, the bark of the white willow, and the horned perisperm of the coffee-tree, do not on this account denote identity of chemical composition; * and that identity might even exist, without our concluding that the medical virtues were analogous.
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In the monocotyledonous plants there is no milky juice; but the perisperm of the palms, which yields such sweet and agreeable milky emulsions, contains, no doubt, caseum.
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In the cocoa-tree it is the perisperm; and in the elais (as in the olive, and the oleineae in general) it is the sarcocarp, or the pulp of the pericarp, that yields oil.
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Those by which the sulphate of iron is precipitated of a green colour, like the real cinchona, the bark of the white willow, and the horned perisperm of the coffee-tree, do not on this account denote identity of chemical composition; * and that identity might even exist, without our concluding that the medical virtues were analogous.
Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 Alexander von Humboldt 1814
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In the monocotyledonous plants there is no milky juice; but the perisperm of the palms, which yields such sweet and agreeable milky emulsions, contains, no doubt, caseum.
Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Alexander von Humboldt 1814
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In the cocoa-tree it is the perisperm; and in the elais (as in the olive, and the oleineae in general) it is the sarcocarp, or the pulp of the pericarp, that yields oil.
Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Alexander von Humboldt 1814
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If our Alfonsia oleifera belong to the genus Elais (as Brown, with great reason believes), it follows, that in the same genus the oil is found in the sarcocarp and in the perisperm.] [* The Galibis or Caribis (the r has been changed into l, as often happens) are of the great stock of the Carib nations.
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