ultrahazardous

adjective

ul·​tra·​haz·​ard·​ous ˌəl-trə-ˈha-zər-dəs How to pronounce ultrahazardous (audio)
Synonyms of ultrahazardousnext
: involving an extremely large risk (as of loss or harm) : extremely or extraordinarily hazardous
ultrahazardous waste
Under American law, in all likelihood, the operation of this plant to manufacture methyl isocyanate would be classified as an ultrahazardous activity …—William J. Curran

Word History

First Known Use

1886, in the meaning defined above

Time Traveler
The first known use of ultrahazardous was in 1886

Dictionary Entries Near ultrahazardous

ultraglamorous

ultrahazardous

ultraheated

See More Nearby Entries 

Cite this Entry

“Ultrahazardous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrahazardous. Accessed 22 Nov. 2024.

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Legal Definition

ultrahazardous

adjective
ul·​tra·​haz·​ard·​ous
ˌəl-trə-ˈha-zər-dəs
: being of such extreme danger or risk of harm that strict liability will be imposed

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