˜yÐÄvlog

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pyrene

1

[ pahy-reen, pahy-reen ]

noun

Botany.
  1. a putamen or stone, especially when there are several in a single fruit; a nutlet.


pyrene

2

[ pahy-reen ]

noun

Chemistry.
  1. a polycyclic, aromatic crystalline hydrocarbon, C 1 6 H 1 0 , consisting of four fused benzene rings, found in coal tar and believed to be carcinogenic.

pyrene

1

/ ˈ±è²¹Éª°ù¾±Ë²Ô /

noun

  1. a solid polynuclear aromatic hydrocarbon extracted from coal tar. Formula: C 16 H 10
“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

pyrene

2

/ ˈ±è²¹Éª°ù¾±Ë²Ô /

noun

  1. botany any of several small hard stones that occur in a single fruit and contain a single seed each
“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
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˜yÐÄvlog History and Origins

Origin of pyrene1

1830–40; < New Latin ±è²âÌ„°ùŧ²Ô²¹ < Greek ±è²âÌ„°ùḗn fruit stone

Origin of pyrene2

First recorded in 1880–85; pyr- + -ene
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˜yÐÄvlog History and Origins

Origin of pyrene1

C19: from pyro- + -ene

Origin of pyrene2

C19: from New Latin pyrena, from Greek ±è³Ü°ùŧ²Ô
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Example Sentences

Examples have not been reviewed.

Others of the crew, who had hastily donned masks to protect themselves from the choking vapour, were busily engaged in hurling pyrene into the seat of the conflagration.

From

From the tar distillate, the chrysene can be fractionally precipitated, and the fluoranthene can be separated from most of the pyrene by fractional distillation in a partial vacuum.

From

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