hexavalent

American  

[hek-suh-vey-luhnt] / ˈhɛk səˌveɪ lənt /

adjective

Chemistry.

1. having a valence of six.

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hexavalent British  

/ ˌhɛksəˈveɪlənt /

adjective

1. Also: sexivalent.  chem having a valency of six

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Etymology

Origin of hexavalent

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

Example Sentences

Air samples collected Sept. 10-22 in the city of Paramount had “slightly elevated” levels of hexavalent chromium, according to the South Coast Air Quality Management District.

From Los Angeles Times

Hexavalent chromium, commonly known as chrome, is best known for providing shiny, rust-resistant coating to auto parts, aviation components and tools.

From Los Angeles Times

Foundries, which liquefy and cast metals, can release hexavalent chromium during melting, welding and grinding.

From Los Angeles Times

Only dioxins, which come primarily from burning waste materials, are deadlier than airborne hexavalent chromium.

From Los Angeles Times

Investigators allege both foundries in Paramount failed to conduct tests to ensure compliance with hexavalent chromium emission limits, did not properly clean areas near chrome-alloy-melting facilities and operated equipment without necessary permits.

From Los Angeles Times