American Heritage Dictionary
(1)
Century Dictionary
(1)
GNU Webster's 1913
WordNet
(2)
Elsewhere on the web
High temperatures cause sugar and protein in meat to convert into cancer-causing heterocyclic amines - or HAs.— Google News India - Top Stories
Nucleic Acid Stains - In modern times, the process of staining cells to observe their features is widespread, and scientists have an array of stains, generally composed of heterocyclic organic dyes, to choose from.
Good correlations were observed between the DNA-binding potencies and the mutagenic and SCE-inducing potencies of the arylnitrenium ions, among these the nitrenium ions derived from the heterocyclic food mutagens / carcinogens MeIQ, IQ, and MeIQx.— CiteULike: Everyone's library
Using a marinade before grilling reduces HCA (heterocyclic amines) by 92 percent to 99 percent, according to American Institute for Cancer Research (aicr. org).— Kansas City Star: Front Page
Although hydrodesulfurization (HDS), a high-pressure, high-temperature catalytic process that converts organic sulfur to hydrogen sulfide gas, can remove various types of sulfur compounds, some types of heterocyclic sulfur compounds existing in petroleum cannot be removed.— Green Car Congress

Century Dictionary (1)
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