nihonium

noun

ni·ho·ni·um ni-ˈhō-nē-əm

: a short-lived, artificially produced radioactive element that has 113 protons

—symbol Nh see Chemical Elements Table

Word History

Etymology

Japanese nihon "Japan" + -ium; so named because the element was produced at the RIKEN Nishina Center for Accelerator-Based Science in Wakō, Japan

First Known Use

2016, in the meaning defined above

Time Traveler

The first known use of nihonium was in 2016

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nihil obstat

nihonium

Niigata

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Style

“Nihonium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nihonium. Accessed 7 Jul. 2026.

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Kids Definition

nihonium

noun

ni·ho·ni·um ni-ˈhō-nē-əm

: a short-lived artificially produced radioactive element see element

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nihonium

noun

Word History

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