pollen

Definition of pollen in English English dictionary: A fine granular substance produced in flowers. Collective term for pollen grains or microspores produced in the anthers of flowering plants; the fine dust-like grains or powder formed within the anther of a flowering plant; Tiny dust-like spores of a seed plant that are carried in the air; (paul-len) - a fine powder produced by grass, trees and weeds that causes allergic reactions and hay fever; [n] The word pollen is derived from the Latin word meaning fine flour or dust Pollen is a collective noun that is treated as singular A single individual is a pollen grain A pollen grain is a microscopic plant that carries the male genome, which is one-half the genetic complement of the parent plant The pollen grain produces the sperm that fertilizes the ovum, or female genetic complement, of the plant The fertilized ovum develops into a seed; Pollen is a fine powder produced by flowers. It fertilizes other flowers of the same species so that they produce seeds. a fine powder produced by flowers, which is carried by the wind or by insects to other flowers of the same type, making them produce seeds. Mass of microscopic spores in a seed plant that appears usually as a fine dust. Each pollen grain is tiny, varies in shape and structure, is formed in the stamens in seed plants, and is transported by various means (see pollination) to the pistil, where fertilization occurs. The outer layer of a pollen grain is very resistant to disintegration; treatment with intense heat, strong acids, or strong bases has little effect on it. Because the grains often are very distinctive, some plant species may be identified by their pollen grains alone. Common components of both recent and ancient geologic sediments, pollen grains have provided much information on the origin and geologic history of plant life on land. Pollen is produced in such quantities that it is a significant part of the airborne components of earth's atmosphere. The protein-containing substance in many pollen grains (e.g., ragweed and many grasses) causes the allergic reaction commonly known as hay fever; a fine, powdery substance released by plants and trees; an allergen; Fine, powdery, yellowish grains that are the fertilizing element of flowering plants; Pollen, essentially, contains the male gametophytes (sex cells) It is produced in the anther See also: pollination; Microscopic particles from the male flower that can fertilize the female flower to produce seed Allergenic pollen is usually from wind-pollinated plants Sinusitis - Infection in the cavities of facial bones Symptoms include pressure or pain around or below the eyes, persistent yellow nasal discharge, mucus drainage in the throat, and nasal stuffiness Urticaria - Hives A rash consisting of irregularly shaped itchy wheals that come and go within a 24 hour period Chronic urticaria is urticaria that persists for 3 or more months continuously, usually with no obvious external cause, and sometimes found to be due to an autoimmune process in the body; The pollen grains of the various species of grasses, plants, trees and flowers are quite distinctive Palynology, the study of the pollen which accompanies archæological finds, enables us to determine what plants grew in former times, and from this, we can determine something of the climatic conditions at the time Pollen is virtually indestructible A pollen diagram shows the relative proportions of the pollen of plants over a period of time, thereby giving a picture of the vegetation and the climate at the time; The fertilizing element of flowering plants; background air pollutant; A fine, powdery substance released by plants and trees; The microspore of seed plants; the male gametes; The dusty or sticky substance produced in the upper part of the stamen called the anther (of the flower) [16] Pollen contains male gametes; grains that contain the male reproductive cells of seed plants; the mass of microspores in a seed plant that usually appears as a fine dust and is the agent of pollination; Fine bran or flour; Male reproductive cells of flowers Bees collect pollen to use as food for their young It is the protein part of a bee's diet; {i} fine powder produced by flowers that fertilizes other plants for reproduction; The dust-like male spores in the anther; The fecundating dustlike cells of the anthers of flowers; of Filament; A collective term for pollen grains; the fine spores that contain male gametes and that are borne by an anther in a flowering plant; A fine powder produced by the 'male' parts of flowers composed of spores that fertilise flowers of the same species; The male reproductive dust from the stamen; The fine powder carried by the anthers of the stamens; Pollen is the powdery, yellowish grain derived from seed plants that develops into the male reproductive cell; See Flower, and Illust; powder-like grains which form on the anther; Tiny (often microscopic) bodies that are borne in the anthers of flowers and contains the male generative cells; farina
pollen count: the measurement of the number of grains of pollen in a cubic meter of air
pollen counter: A device used to measure the amount of pollen in the air, to determine the pollen count
pollen counters: plural form of pollen counter
pollen grain: A single male reproductive particle of which the pollen of a plant consists
pollen grains: plural form of pollen grain
pollen parent: The plant that contributes male reproductive material, the pollen
pollen tube: the tube that develops from the wall of a pollen grain and, in seed plants, provides a passage through which the male nuclei reach the embryo sac to effect fertilization
pollen count: the number of pollen grains (usually ragweed) in a standard volume of air over a twenty-four hour period and a specified time and place
pollen count: The pollen count is a measure of how much pollen is in the air at a particular place and time. Information about the pollen count is given to help people who are made ill by pollen. Avoid trips to the country while the pollen count is high. The average number of pollen grains, usually of ragweed, in a cubic yard or other standard volume of air over a 24-hour period at a specified time and place. a measure of the amount of pollen in the air, usually given as a guide for people who are made ill by it
pollen grain: A microspore of seed plants, containing a male gametophyte
pollen mother cell: The microsporocyte of a seed plant
pollen sac: The microsporangium of a seed plant in which pollen is produced
pollen tube: The slender tube formed by the pollen grain that penetrates an ovule and releases the male gametes
pollen tube: slender tubular outgrown from a pollen grain that penetrates the ovule and releases male gametes
I'm allergic to pollen: Indicates that the speaker has an allergy to pollen
ragweed pollen: pollen of the ragweed plant is a common allergen

Turkish - English

Definition of pollen in Turkish English dictionary: dust
pollen fırçası: (Hayvan Bilim, Zooloji) antenna comb
pollen peleti: (Arılık) pollen load

pollen

Hyphenation

pol·len

Turkish pronunciation

pälın

Pronunciation

/ˈpälən/ /ˈpɑːlən/

Etymology

[ 'pä-l&n ] (noun.) 1760. From Latin pollen (“fine flour”), used by Linnaeus to describe the substance produced in flowers.

Tenses

pollening, pollened

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pollen

Definition of pollen in English Turkish dictionary

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Definition of pollen in English English dictionary

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Definition of pollen in Turkish English dictionary

Related Terms

Hyphenation

Turkish pronunciation

Pronunciation

Etymology

Tenses

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