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Pollen - Dictionary Definition and Overview |
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Pollen : (noun)
1: the fine spores that contain male gametes and that are borne
by an anther in a flowering plant
Based on WordNet 2.0
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Pollen : \Pol"len\, n. [L. pollen fine flour, fine dust; cf. Gr.
?]
1. Fine bran or flour. [Obs.] --Bailey.
2. (Bot.) The fecundating dustlike cells of the anthers of
flowers. See Flower, and Illust. of Filament.
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.
Based on Webster's Revised Unabridged Dictionary
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Pollen : Pollen: Small, light, dry protein particles from trees, grasses, flowers, and weeds that may be spread by the wind. Pollen particles are usually the male sex cells of the plant, and are
smaller than the tip of a pin. Pollen is a potent stimulator of allergic responses. It lodges in the mucus membranes that line the nose and in other parts of the respiratory tract, causing irritation
and histamine reactions.
Based on Webster's Revised Unabridged Dictionary (1913)
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