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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

/ ˌpɒlɪˈsaɪklɪk /

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

    a polycyclic stele

    polycyclic shells

“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

/ pŏl′ĭ-sīklĭk,-sĭklĭk /

  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

Not surprisingly, polycyclic aromatic hydrocarbons can be found in coal, oil and even food.

The by-products of all this rampant combustion are smelly compounds called polycyclic aromatic hydrocarbons.

Of particular concern was a smaller class of particle pollution known as PAHs, or polycyclic aromatic hydrocarbons.

That must be that polycyclic screen that Conway reported on.

"That must be that sixth-phase polycyclic screen that Conway reported on," Cleveland frowned in thought.

Pierced Roger's polycyclic screen; exposed the bare metal of Roger's walls!

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