embryo sac

/ˈɛmbrioʊ sæk/ (say 'embreeoh sak)

noun
the gametophyte of a seed-bearing plant, being situated within the ovule, giving rise to the endosperm or supposed female prothallium, and forming the cell in which the embryo is developed.

Australian English dictionary. 2014.

Look at other dictionaries:

  • embryo sac — n. Bot. the female gametophyte of a flowering plant, consisting typically of a microscopic elongated sac that is situated within the ovule and contains eight nuclei in seven cells: it gives rise to the embryo and endosperm of the seed after… …   English World dictionary

  • Embryo sac — Em bry*o sac (Bot.) See under {Embryonic}. [1913 Webster] …   The Collaborative International Dictionary of English

  • embryo sac — embryo sac. См. зародышевый мешок. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • embryo sac — em′bryo sac n. bot (in flowering plants) a large cell of the rudimentary seed, within which the embryo develops Also called megaspore …   From formal English to slang

  • embryo-sac — emˈbryo sac noun The megaspore of a flowering plant, one of the cells of the nucellus • • • Main Entry: ↑embryo …   Useful english dictionary

  • embryo sac — Bot. the megaspore of a seed bearing plant, situated within the ovule, giving rise to the endosperm and forming the egg cell or nucleus from which the embryo plant develops after fertilization. [1870 75] * * * …   Universalium

  • embryo sac — noun Date: 1844 the female gametophyte of a seed plant consisting of a thin walled sac within the nucellus that contains the egg nucleus and other nuclei which give rise to endosperm on fertilization …   New Collegiate Dictionary

  • embryo sac — noun : the female gametophyte of a seed plant consisting of a thin walled sac within the nucellus that typically develops from a single functional megaspore and contains several meiotically reduced nuclei which lack separating cell walls and… …   Useful english dictionary

  • embryo sac — The mature female gametophyte in angiosperms. Generally a seven celled structure two synergids, one egg cell, three antipodal cells (each with a single haploid nucleus) and one endosperm mother cell with two haploid nuclei …   Glossary of Biotechnology

  • embryo sac cell — embryo sac cell. См. клетка зародышевого мешка. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

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