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POLLEN
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The fine spores that contain male gametes and that are borne by an anther in a flowering plant
Classified under:
Hypernyms ("pollen" is a kind of...):
spore (a small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion)
Hyponyms (each of the following is a kind of "pollen"):
pollinium (a coherent mass of pollen grains (as in orchids))
ragweed pollen (pollen of the ragweed plant is a common allergen)
Derivation:
pollinate (fertilize by transfering pollen)
Context examples:
Examples include pollen, molds, and certain foods.
(Allergen, NCI Dictionary)
Hemolytic anemia due to the ingestion of fava beans or after inhalation of pollen from the Vicia fava plant by persons with glucose-6-phosphate dehydrogenase deficient erythrocytes.
(Favism, NLM, Medical Subject Headings)
A supplement containing granules composed of pollen gathered by bees for food and honey.
(Bee Pollen, NCI Thesaurus)
It may be that grass pollens become more allergenic when combined with air pollutants so that the benefits of greenspace diminish as pollution increases.
(Asthma Attacks Reduced in Tree-Lined Urban Neighborhoods, The Titi Tudorancea Bulletin)
The team also took core samples of mud from 1 to 2 meters below the seafloor and analyzed ancient pollen to determine the age of the samples.
(Massive East Antarctic Ice Sheet has history of instability, National Science Foundatio)
Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles.
(Air Pollution, Environmental Protection Agency)
The research shows that anther rubbing causes self‑pollen deposition on stigmas and is sufficient to achieve maximal reproductive output, with values similar to those achieved by artificial pollination or outcrossing fertilization.
(Some plants are capable of ‘rubbing’ themselves for hours in order to achieve self fertilization, University of Granada)
Sources of indoor pollution include: • Mold and pollen • Tobacco smoke • Household products and pesticides • Gases such as radon and carbon monoxide • Materials used in the building such as asbestos, formaldehyde and lead
(Indoor Air Pollution, Environmental Protection Agency)
Allergic disorders occur when the immune system overreacts to substances that are usually not harmful, such as pollen, molds, and certain foods.
(Immune system disorder, NCI Dictionary)
An asthma attack may be brought on by pet hair, dust, smoke, pollen, mold, exercise, cold air, or stress.
(Asthma, NCI Dictionary)
