Pollen grain
Pollen Pol"len, n. [L. pollen fine flour, fine dust; cf. Gr. ?] 1. Fine bran or flour. [Obs.] --Bailey. [1913 Webster]

2. (Bot.) The fecundating dustlike cells of the anthers of flowers. See {Flower}, and Illust. of {Filament}. [1913 Webster]

{Pollen grain} (Bot.), a particle or call of pollen.

{Pollen mass}, a pollinium. --Gray.

{Pollen sac}, a compartment of an anther containing pollen, -- usually there are four in each anther.

{Pollen tube}, a slender tube which issues from the pollen grain on its contact with the stigma, which it penetrates, thus conveying, it is supposed, the fecundating matter of the grain to the ovule. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • pollen grain — pollen grain. См. пыльцевое зерно. (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.

  • pollen grain — žiedadulkė statusas T sritis augalininkystė apibrėžtis Sėklinių augalų vyriškasis gametofitas. atitikmenys: angl. pollen grain rus. пыльцевое зерно …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • pollen grain — pol′len grain n. bot a single granule of pollen • Etymology: 1825–35 …   From formal English to slang

  • pollen grain — noun Date: 1835 one of the granular microspores that occur in pollen and give rise to the male gametophyte of a seed plant …   New Collegiate Dictionary

  • pollen grain — a single granule of pollen. [1825 35] * * * …   Universalium

  • pollen grain — noun A single male reproductive particle of which the pollen of a plant consists. Syn: microgametophyte …   Wiktionary

  • pollen grain — The mature microspore, produced in the pollen sac of angiosperms or the microsporangium of gymnosperms. Unicellular, with variable shape and size, and an elaborately structured wall …   Glossary of Biotechnology

  • pollen grain — noun : one of the microsporic grains of which pollen is made up …   Useful english dictionary

  • grain — [ grɛ̃ ] n. m. • v. 1160; lat. granum → graine I ♦ 1 ♦ Fruit comestible des graminées. Le grain des céréales est un caryopse. Grain de blé, de maïs, de mil, de riz, d orge. Ôter les grains d un épi. ⇒ égrener. Menuis. GRAIN D ORGE. Assemblage à… …   Encyclopédie Universelle

  • Pollen — Pol len, n. [L. pollen fine flour, fine dust; cf. Gr. ?] 1. Fine bran or flour. [Obs.] Bailey. [1913 Webster] 2. (Bot.) The fecundating dustlike cells of the anthers of flowers. See {Flower}, and Illust. of {Filament}. [1913 Webster] {Pollen… …   The Collaborative International Dictionary of English

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