hexavalent

[ hek-suh-vey-luhnt ]

adjective

, Chemistry.

1. having a valence of six.

hexavalent

/ ˌhɛksəˈveɪlənt /

adjective

1. chem having a valency of six Alsosexivalent

Word History and Origins

Origin of hexavalent¹

First recorded in 1885–90; hexa- + -valent

Example Sentences

There was also evidence of a contaminant researchers had linked to cancer, hexavalent chromium, which had previously been discovered in some California drinking wells by environmental advocate Erin Brockovich.

From ProPublica

Because the factory makes planes, the EPA assumed that a fifth of the total chromium releases were hexavalent.

From ProPublica

Georgia’s local public health departments offer a $122 well test that can detect a limited number of toxins, but not hexavalent chromium.

From ProPublica

On the other hand, Vengosh also has conducted research showing that ash from Wyoming-sourced Powder River Basin coal — the coal that Georgia Power uses at Plant Scherer — contains high levels of hexavalent chromium.

From ProPublica

Each one contained hexavalent chromium levels between 30 and 140 times higher than drinking-water guidelines in North Carolina, and between 100 and 490 times higher than those in California.

From ProPublica

The coal ash deposits have heavy concentrations of hexavalent chromium, a carcinogen.

From The Daily Beast