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polycyclic

[pol-ee-sahy-klik, -sik-lik]

adjective

Chemistry.
  1. pertaining to an organic compound containing several atomic rings, usually fused.



polycyclic

/ ˌɒɪˈɪɪ /

adjective

  1. (of a molecule or compound) containing or having molecules that contain two or more closed rings of atoms

  2. biology having two or more rings or whorls

    polycyclic shells

    a polycyclic stele

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. a polycyclic compound

    anthracene is a polycyclic

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

polycyclic

  1. Having two or more atomic rings in a molecule. Steroids are polycyclic compounds.

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Word History and Origins

Origin of polycyclic1

First recorded in 1865–70; poly- + cyclic
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Example Sentences

Examples have not been reviewed.

The board soon had reams of public data for beaches from Las Flores Creek in Malibu to Dockweiler Beach in Playa del Rey, showing results for dozens of different contaminants, including heavy metals, polychlorinated biphenol and polycyclic aromatic hydrocarbons.

From

Another had high levels of a class of contaminants called polycyclic aromatic hydrocarbons, which can cause headaches, coughing, skin irritation and, over long periods of exposure, can come with an increased risk of cancer.

From

“Samples from nearly a dozen beaches along the L.A. County coastline were tested for metals — polychlorinated biphenyls and polycyclic aromatic hydrocarbons — which are chemicals that may be found in runoff after wildfires,” the county Department of Beaches and Harbors said in a news release.

From

Both areas were tested for metals, nutrients, polychlorinated biphenyls and polycyclic aromatic hydrocarbons, which are all chemicals that may be found in water runoff based on previous California wildfires, officials said.

From

The organization also sampled 25 different polycyclic aromatic hydrocarbons, organic compounds that form when oil, wood or garbage burns.

From

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