Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The stone of certain fruits, such as the cherry.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A polycyclic aromatic hydrocarbon containing four fused benzene rings; first isolated from coal tar
  • n. the stone of a drupe

from the GNU version of the Collaborative International Dictionary of English

  • n. One of the less volatile hydrocarbons of coal tar, obtained as a white crystalline substance, C16H10.
  • n. Same as pyrena.

from The Century Dictionary and Cyclopedia

  • n. A stone or putamen, properly when there are several in a single fruit, as in the huckleberry and other berry-like drupes, and in some pomes with a stony endocarp, as those of the hawthorn and medlar; a nutlet. Also ossiculus.
  • n. A hydrocarbon (C15H12) obtained from coaltar.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a pale yellow crystalline hydrocarbon C16H10 extracted from coal tar
  • n. the small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it

Etymologies

New Latin pȳrēna, from Greek purēn.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From pyr- + -ene. (Wiktionary)
From Ancient Greek πυρήν ("fruit stone"). (Wiktionary)

Examples

  • For example, the limit in fish of the PAH named benzo (a) pyrene is 35 parts per billion.

    Gulf Seafood Gets Intense Safety Testing

  • One study measured the ability of vegetables to suppress the cancer-causing genetic damage of various environmental toxins, including benzo (a) pyrene (BaP) which is the main cancer-causing chemical in cigarette smoke and auto exhaust.

    Dr. Walter Crinnion: Are Organic Foods Healthier?

  • Lange, “Presentation of Benzo(a)pyrene to Microsomal Enzymes by Asbestos Fibers in the Salmonella/Mammalian Microsome Mutagenicity Test,” Environmental Health Perspectives 51 (1983): 337–41.

    The Emperor of All Maladies

  • With Berenblum, she published on the carcinogenecity of 3,4-benzo (a) pyrene, including in Cancer Research.

    Regina Schoental.

  • In Russia, the number of cities with concentrations of benzo (a) pyrene over maximum allowable concentration has increased in the last five years, reaching 47 per cent in 2004.

    Global Environment Outlook (GEO-4)~ Chapter 6

  • This increase is mainly caused by an increase in particulates, nitrogen dioxide and benzo (a) pyrene.

    Global Environment Outlook (GEO-4)~ Chapter 6

  • The propose the work as proof-of-concept, but use a very artificial data set of only 12 crystal structures benzene and eleven polycyclic aromatic hydrocarbons, like naphtalene, anthracene, phenanthrene, triphenylene, pyrene, perylene, and coronene.

    Archive 2007-08-01

  • · Polyaromatic hydrocarbons such as benzo (a) pyrene.

    Chapter 8

  • The plaque forms because the force of the flowing blood (especially when blood pressure is high) injures the artery lining, allowing chemicals in the blood, such as benzo(a)pyrene (BP) from cigarette smoke, to penetrate more easily and mutate artery muscle cells in the middle layer of the artery.

    The New Super-Nutrition

  • The real risk factors are not fats, dietary cholesterol, cigarettes, and lack of exercise, but are low-density lipoproteins (LDL), high blood-platelet adhesion index, triglycerides, benzo(a)pyrene (BP), and trace-element deficiencies.

    The New Super-Nutrition

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