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 (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.


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


(nuˈsɛl əs, nyu-)

n., pl. -cel•li (-ˈsɛl aɪ)
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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nucellus - central part of a plant ovulenucellus - central part of a plant ovule; contains the embryo sac
ovule - a small body that contains the female germ cell of a plant; develops into a seed after fertilization
plant part, plant structure - any part of a plant or fungus
References in periodicals archive ?
He wrote that such nucellar proteins likely are responsible for processing cellular compounds that are secreted into the drop.
The following are examples of models of asexual reproduction: Rooting Cutting; Apomictic Seeds; Division; Layering; Runners; Tissue Culture; Grafting and Budding; Bulbs; Slips; Rhizomes; Corms; and Nucellar Embryos.
Survival by vitrification of nucellar cells of naval orange (Citrus sinensis Osb.
ju:s) EUC eucyclic (a Botanical term), deuce EWS Newspeak UIS nuisance YUS Yusufzai (a Pathan tribal group inhabiting the N-W Frontier Province of Pakistan \passage) EUS Euston, eustacy (a uniform change of sea level worldwide), UC nucellar, fuci, deduce \ Zeus, meuse us use, manuscript, meatus (a natural channel or tubular short 's' sound followed by long 'U' sound.
Pollen lands indiscriminately on adjacent surfaces and germinates away from the micropyle, the pollen tube growing along the epidermis toward the nucellar plug (Fig.
developing MTOC is associated with the membranes of the nucellar beak,
in a cross-section of the nucellar zone of one seed, a pollen tube was
Evident synapomorphies are difficult to find, but some character states have been mentioned in the literature as being unique in the genus; that is, trichomes of moderately long cells with a distal end that become necrotic long before the proximal end (Stevens, 1971), a nucellar pedestal on which the embryo sac is attached, earlike projections from embryo sac, and ventral carpellary bundles in the septal plane (Palser, 1951, 1952, 1961b).
Other nucellar and chalazal structures, such as hypostase, perisperm, and chalazosperm, are regarded as being of some systematic significance in monocotyledons and are used as characters in analyses.