Ni

Ni is a term that appears in science, linguistics, and geography. In chemistry, Ni is the symbol for nickel, a silvery-white metal with an atomic number of 28.

Nickel is widely used in stainless steel and various alloys, such as nickel-chromium alloys. It occurs naturally in sulfide minerals and is valued for its corrosion resistance and magnetic properties at room temperature.

In codes and internet addressing, NI is the ISO 3166-1 alpha-2 country code for Nicaragua, and the country’s internet top-level domain is .ni.

In language, ni is a common syllable in East Asian languages. In Japanese, the kana に or ニ represents the syllable ni and also functions as a location or time marker in sentences.

In Mandarin Chinese without tone marks, ni is used to render the word you (nǐ). Tones are essential for meaning but are often omitted in plain text.

As an acronym, NI may refer to National Insurance in the United Kingdom and Ireland, or to National Instruments, a technology company that develops hardware and software for engineers.