Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Containing more than one kind of atom joined in a ring.
from The Century Dictionary.
- In chem., of a substance the molecule is believed to consist of a ring or continuous chain of atoms, containing in such a ring atoms of more than a single element. Thus the molecule of pyridine consists of a ring of six atoms consecutively united with each other, five of these atoms being of carbon and one of nitrogen (each carbon atom having also a hydrogen atom attached to it)—thus:
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective organic chemistry Having one or more
atoms other thancarbon in at least one of itsrings . - noun organic chemistry A
heterocycle
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a compound containing a heterocyclic ring
- adjective containing a closed ring of atoms of which at least one is not a carbon atom
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Cooking meats with charcoal or gas grills can cause the formation of compounds called heterocyclic amines (HCAs) and polycyclic aromatic hydrocarbons (PAHs).
Burning Pellets in the Grill Laura Johannes 2011
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Burning and charring grilled meat can cause cancer-causing substances called heterocyclic amines (HCAs) to form in foods.
For the weekend: 4 fuss-free ways to healthy up your Memorial Day 2010
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The scientists speculated that carcinogens called heterocyclic amines may be involved.
Surprising Diet Study Result: Red meat not the bad guy this time 2010
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But cooking muscle meats and other protein foods at high heats can create carcinogenic chemicals called heterocyclic amines (HCAs).
Dr. Nicholas Perricone: Barbecue Your Way to Beautiful Skin 2009
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Grilling food until its overcooked, burned, or charred can transform amino acids and other natural substances in the foods into compounds called heterocyclic amines, which have been shown to cause cancer in laboratory animals.
Grilling and cancer risks: Avoid burning or charring food 2009
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Grilling food until its overcooked, burned, or charred can transform amino acids and other natural substances in the foods into compounds called heterocyclic amines, which have been shown to cause cancer in laboratory animals.
Grilling and cancer risks: Avoid burning or charring food 2009
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High heat, indoors or out When protein from any muscle source -- beef, chicken, pork or fish -- is exposed to high temperatures for a long time, it forms a chemical called heterocyclic amines, or HCAs.
Summertime and the Grillin' Is Easy -- but Do It Safely 2009
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Cooking at very high temperatures can also contribute to the formation of carcinogenic compounds called heterocyclic amines.
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Charred meat is high in carcinogens called heterocyclic amines.
The Source Woodson Merrell 2008
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Cooking at very high temperatures can also contribute to the formation of carcinogenic compounds called heterocyclic amines.
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