Found 2 items, similar to Seed coat.
English → English
Definition: seed coat
n : protective outer layer of seeds of flowering plants [syn: testa
English → English
Definition: Seed coat
(s[=e]d), n.; pl. Seed
. [OE. seed, sed,
AS. s[=ae]d, fr. s[=a]wan to sow; akin to D. zaad seed, G.
saat, Icel. s[=a][eth], s[ae][eth]i, Goth. manas[=e][thorn]s
seed of men, world. See Sow
to scatter seed, and cf.
(a) A ripened ovule, consisting of an embryo with one or
more integuments, or coverings; as, an apple seed; a
currant seed. By germination it produces a new plant.
(b) Any small seedlike fruit, though it may consist of a
pericarp, or even a calyx, as well as the seed proper;
as, parsnip seed; thistle seed.
And God said, Let the earth bring forth grass,
the herb yielding seed, and the fruit tree
yielding fruit after his kind, whose seed is in
itself. --Gen. i. 11.
Note: The seed proper has an outer and an inner coat, and
within these the kernel or nucleus. The kernel is
either the embryo alone, or the embryo inclosed in the
albumen, which is the material for the nourishment of
the developing embryo. The scar on a seed, left where
the stem parted from it, is called the hilum, and the
closed orifice of the ovule, the micropyle.
2. (Physiol.) The generative fluid of the male; semen; sperm;
-- not used in the plural.
3. That from which anything springs; first principle;
original; source; as, the seeds of virtue or vice.
4. The principle of production.
Praise of great acts he scatters as a seed,
Which may the like in coming ages breed. --Waller.
5. Progeny; offspring; children; descendants; as, the seed of
Abraham; the seed of David.
Note: In this sense the word is applied to one person, or to
any number collectively, and admits of the plural form,
though rarely used in the plural.
6. Race; generation; birth.
Of mortal seed they were not held. --Waller.
(Artesian well), a packing to prevent percolation
of water down the bore hole. It consists of a bag
encircling the tubing and filled with flax seed, which
swells when wet and fills the space between the tubing and
the sides of the hole.
(Bot.), the germ or rudiment of the plant in the
embryo state; the ovule.
(Bot.), the covering of a seed.
, or Seed grain
(Bot.), corn or grain for seed.
To eat the seed corn
, To eat the corn which should be saved
for seed, so as to forestall starvation; -- a desparate
measure, since it only postpones disaster. Hence: any
desparate action which creates a disastrous situation in
the long-term, done in order to provide temporary relief.
(Bot.), the soft hairs on certain seeds, as
. See 6th Drill
(Zo["o]l.), any finch of the genera
, and Crithagra
. They feed mainly on seeds.
(Zo["o]l.), any gall which resembles a seed,
formed on the leaves of various plants, usually by some
species of Phylloxera.
(Bot.), a cotyledon.
(Bot.), a cotyledon; a seed leaf.
, oil expressed from the seeds of plants.
, a young oyster, especially when of a size
suitable for transplantation to a new locality.
, a small pearl of little value.
, or Seed plot
, the ground on which seeds are
sown, to produce plants for transplanting; a nursery.
(Bot.), the stalk of an ovule or seed; a
(Zo["o]l.), one of several species of ticks
resembling seeds in form and color.
(Bot.), that part of a plant which contains the
seeds; a pericarp.
(Zo["o]l.), any one of numerous small weevils,
especially those of the genus Apion
, which live in the
seeds of various plants.
, cotton wool not yet cleansed of its seeds.
[1913 Webster +PJC]