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py·rene 1

 (pī′rēn′, pī-rēn′)
The stone of certain fruits, such as the cherry.

[New Latin pȳrēna, from Greek purēn.]

py·rene 2

 (pī′rēn′, pī-rēn′)
A carcinogenic, colorless, solid polycyclic aromatic hydrocarbon, C16H10, exhibiting blue fluorescence in solution, used in the manufacture of dyes, pesticides, and pharmaceuticals, and as an analytical reagent.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Elements & Compounds) a solid polynuclear aromatic hydrocarbon extracted from coal tar. Formula: C16H10
[C19: from pyro- + -ene]


(Botany) botany any of several small hard stones that occur in a single fruit and contain a single seed each
[C19: from New Latin pyrena, from Greek purēn]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pyrene - a pale yellow crystalline hydrocarbon C16H10 extracted from coal tarpyrene - a pale yellow crystalline hydrocarbon C16H10 extracted from coal tar
hydrocarbon - an organic compound containing only carbon and hydrogen
2.pyrene - the small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it
nutlet - a small nut
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The standard curve of PAHs was including naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benzo(a)anthracene, chrysene, benzo(b) fluoranthene, benzo(a)pyrene, indeno(1,2,3-cd) pyrene, and benzo(g,h,i)perylene as shown in figure 1.
The ratios of excretion to intake via dermal absorption for fluorene, phenanthrene, and pyrene were lower than the ratios from dietary exposure but higher than the ratios from inhalation.
Polycyclic aromatic hydrocarbons (PAHs): Naphthalene, acenaphthylene, acenaphthene, phenanthrene, fluorene, anthracene, pyrene, chrysene (internal standard (i.s)), benzo(a)anthracene, fluoranthene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, benzo(g,h,i)perylene, indeno(1,2,3-cd)pyrene and dibenzo(a,h)anthracene.
However, 12.08 and14.68 ppb for Benzo(e)pyrene and 5.62 ppb for Indenol (1, 2, 3 - cd) pyrene exceeded the expected limit.
Earlier we reported about testing CDA fibers and films as matrices for the SSF of pyrene taken as a model PAH [21, 22].
These PAHs are naphthalene, fluorene, phenanthrene, and pyrene, all present in high concentrations in the complex Superfund-derived PAH mixture.
All 16 PAH standards, naphthalene (NAP), acenaphthylene (ACNY), acenaphthene (ACN), fluorene (FL), phenanthrene (PHEN), anthracene (ANTH), fluoranthene (FLU), pyrene (PYR), benz[a]anthracene (B[a]A), chrysene (CHRY), benzo[b]fluoranthene (B[b]F), benzo[k]fluoranthene (B[k]F), benzo[a]pyrene (B[a]P), indeno[1,2,3-cd]pyrene (I-123-cd_P), dibenz[a,h]anthracene (D[ah]A), and benzo[g,h,i] perylene (B[ghi]P), were purchased from Cambridge isotope laboratories (Frontage Road, Andover, MA, USA).
Pyrene, composed of four aromatic rings, originates primarily from the thermal decomposition of organic matter and its subsequent recombination (Cerniglia 1993; Samanta, Sing, & Jain, 2002; Haritash & Kaushik 2009).
Ethyl bromide (Sigma-Aldrich) and pyrene (Molecular Probes) were used as received.
A certified solution of 16 standard polycyclic aromatic hydrocarbons (naphthalene; acenaphthylene; acenaphthene; fluorene; phenanthrene; anthracene; fluoranthene; pyrene; benz[a]anthracene; chrysene; benzo[k] fluoranthene; benzo[b]fluoranthene; benzo[a]pyrene; indeno[1, 2,3-cd]pyrene; dibenz[a,h]anthracene; and benzo[g,h,i]perylene) with 10 mg/L concentration of each compound was purchased from Supelco, Milan, Italy.
Numerous PAHs, including benz[a]anthracene, benzo[a] pyrene, benzo[b] fluoranthene, benzo [j] fluoranthene, benzo[k] fluoranthene, chrysene, dibenz [a,h] anthracene, and indeno [1,2,3-c,d] pyrene, were responsible for tumors in laboratory animals when they breathed these substances in the air (David, 1990).
The fourteen contributions that make up the main body of the text are devoted to polymer hydrogel dressing in wood management, dendritic organic semiconductors based on pyrene and triazine derivatives, preparation of polymer and ferrite nanocomposites for EMI applications, and a wide variety of other related subjects.