1. A synthetic chemical element with atomic number 113, created by nuclear fusion and officially named in 2016.
Usage: chemistry; Named after Nihon, the Japanese word for Japan, reflecting the element's discovery by Japanese scientists

Examples

• Nihonium was officially recognized as element 113 by the International Union of Pure and Applied Chemistry.
• Scientists at the RIKEN institute in Japan played a key role in the discovery of nihonium.
• The periodic table now includes nihonium among the synthetic elements.
• Nihonium is an extremely unstable element with a very short half-life.
• The symbol for nihonium on the periodic table is Nh.