trihalomethane


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Related to trihalomethane: chloroform

trihalomethane

(trī′hăl-ə-mĕth′ān′)
n.
Any of several chemical compounds in which halogen atoms replace three of the hydrogen atoms normally present in a methane molecule. These toxic compounds can occur in chlorinated water as a result of reaction between organic materials in the water and chlorine added as a disinfectant.