polyaromaticadj.n.
/ˌpɒlɪarəˈmatɪk/, U.S. /ˈˌpɑliˌɛrəˈmædɪk/, /ˈˌpɑliˌɛroʊˈmædɪk/ Chemistry.
A. adj.
Containing or consisting of two or more aromatic rings, esp. in a fused system.
ΚΠ
1937 Industr. & Engin. Chem. Mar. 323/1 Pyrene (C16H10) is a polyaromatic hydrocarbon made up of four interlocked aromatic rings.
1967 Science 15 Sept. 1319/2 Measurements are being made on..complexes of oriented DNA and substances such as polyaromatic dyes.
2000 Land & Water Sept.–Oct. 43/1 Other toxic substances that were leaked or discharged into the lake system..include chlorinated benzenes, polyaromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and metals.
B. n.
A polyaromatic compound.
ΚΠ
1951 Jrnl. Amer. Chem. Soc. 73 3526/2 The bulk of the fractions could not be identified but from their properties appeared to be mixtures of polyaromatics.
1980 Fuel Processing & Technol. 3 297 The pyrolysis of 1,2dihydronaphthalene or of tetralin resulting from only partial hydrogenation of naphthalene gives very small yields of benzene and other light aromatics.
2004 Fuel Processing Technol. 86 224 In the first step, the LCO [= light cycle oil] is sent to a hydrotreatment unit where the heteroatoms are removed and the polyaromatics are saturated.
This is a new entry (OED Third Edition, September 2006; most recently modified version published online March 2022).
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adj.n.1937- to have a great miss of
- to have a green bonnet
- to have a green thumb
- to have a grey head and a green tail
- to have a grudge against
- to have a grudge against at
- to have a grudge against to
- to have a gust of
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- to have a hand in the dish
- to have a hand in the pie
- to have a hank on or over any one
- to have a hard-on for
- to have a hardon for
- to have a hatch before the door
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- to have a head for heights
- to have a head on one's shoulders
- to have a head upon one's shoulders
- to have a heart
- to have a heat on