nucellus

nu·cel·lus

N0184600 (no͞o-sĕl′əs, nyo͞o-)n. pl. nu·cel·li (-sĕl′ī) Botany The central portion of an ovule in which the embryo sac develops.

[New Latin, from nux, nuc-, nut.]

nu·cel′lar adj.

nucellus

(njuːˈsɛləs) n, pl -li (-laɪ) (Botany) the central part of a plant ovule containing the embryo sac[C19: New Latin, from Latin nucella, from nux nut] nuˈcellar adj

nu•cel•lus

(nuˈsɛl əs, nyu-)

n., pl. -cel•li (-ˈsɛl aɪ)
Bot. the central cellular mass of the body of the ovule, containing the embryo sac. [1880–85; < New Latin < Latin nuc- (s. of nux) nut] nu•cel′lar, adj.

Thesaurus

Noun

nucellus - central part of a plant ovule; contains the embryo sacovule - a small body that contains the female germ cell of a plant; develops into a seed after fertilizationplant part, plant structure - any part of a plant or fungus

Translations

nocella

Nucellus

nucellus

[‚nü′sel·əs] (botany) The oval central mass of tissue in the ovule; contains the embryo sac.

Nucellus

the central part, or nucleus, of the ovule in seed plants; it is homologous to the megasporangium of ferns (Pteridophyta). Inside the nucellus, the megaspore mother cell is differentiated. The nucleus of the megaspore mother cell divides, forming four nuclei, from which subsequently arise four megaspores. Three of the megaspores atrophy, and one develops into the female gametophyte (in gymnosperms, the primary endosperm; in angiosperms, the embryo sac). In some flowering plants the tetranuclear cell divides into two binuclear cells or does not divide at all; the gametophyte originates from one binuclear cell (the second one atrophies) or from the entire tetranuclear cell. The nucellus preserved in the seed is called the perisperm.

nucellus

nu·cel·lus

nucellus

nu•cel•lus

Nucellus

nucellus

Nucellus

nucellus

nucellus

nucellus

Words related to nucellus

noun central part of a plant ovule

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