Definition of ovule

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Ovule (n.) The rudiment of a seed. It grows from a placenta, and consists of a soft nucleus within two delicate coatings. The attached base of the ovule is the hilum, the coatings are united with the nucleus at the chalaza, and their minute orifice is the foramen..

Lern More About Ovule

Exostome :: Exostome (n.) The small aperture or foremen in the outer coat of the ovule of a plant.
Spermaphore :: Spermaphore (n.) That part of the ovary from which the ovules arise; the placenta.
Tercine :: Tercine (n.) A cellular layer derived from the nucleus of an ovule and surrounding the embryo sac. Cf. Quintine.
Fertilization :: Fertilization (n.) The act of fecundating or impregnating animal or vegetable germs; esp., the process by which in flowers the pollen renders the ovule fertile, or an analogous process in flowerless plants; fecundation; impregnation..
Impregnable :: Impregnable (a.) Capable of being impregnated, as the egg of an animal, or the ovule of a plant..
Ovulary :: Ovulary (a.) Pertaining to ovules.
Rhaphe :: Rhaphe (n.) The continuation of the seed stalk along the side of an anatropous ovule or seed, forming a ridge or seam..
Proembryo :: Proembryo (n.) The series of cells formed in the ovule of a flowering plant after fertilization, but before the formation of the embryo..
Hilum :: Hilum (n.) The eye of a bean or other seed; the mark or scar at the point of attachment of an ovule or seed to its base or support; -- called also hile.
Gemmule :: Gemmule (n.) An ovule.
Oospere :: Oospere (n.) An analogous mass of protoplasm in the ovule of a flowering plant; an embryonic vesicle.
Apogamy :: Apogamy (n.) The formation of a bud in place of a fertilized ovule or oospore.
Primine :: Primine (n.) The outermost of the two integuments of an ovule.
Quartine :: Quartine (n.) A supposed fourth integument of an ovule, counting from the outside..
Ovule :: Ovule (n.) The rudiment of a seed. It grows from a placenta, and consists of a soft nucleus within two delicate coatings. The attached base of the ovule is the hilum, the coatings are united with the nucleus at the chalaza, and their minute orifice is the foramen..
Amphitropous :: Amphitropous (a.) Having the ovule inverted, but with the attachment near the middle of one side; half anatropous..
Abortive :: Abortive (v.) Imperfectly formed or developed; rudimentary; sterile; as, an abortive organ, stamen, ovule, etc..
Chalaza :: Chalaza (n.) The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus..
Nucleus :: Nucleus (n.) An incipient ovule of soft cellular tissue.
Anatropous :: Anatropous (a.) Having the ovule inverted at an early period in its development, so that the chalaza is as the apparent apex; -- opposed to orthotropous..
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