nitrogen
Chemical element with symbol N and atomic number 7. Used in scientific and everyday contexts.
About 78% of air is nitrogen.
Liquid nitrogen is very cold.
About 78% of the atmosphere consists of nitrogen.
The inside of the package is filled with nitrogen to preserve the food.
Injecting nitrogen into tires stabilizes the air pressure.
窒素 (nitrogen, N) and 水素 (hydrogen, H) are both gaseous elements with similar-sounding names ending in 素, so learners often confuse which is which.
Standard kanji spelling for nitrogen.
Coined in Japan as a calque of the Western term 'nitrogen'. The kanji 窒 means 'to block' or 'suffocate', and 素 means 'element', referring to nitrogen's property of not supporting respiration.
nitrogen dioxide
molecular nitrogen