Nitrogen Meaning
/ˈnaɪ.tɹə.d͡ʒən/Definition, CEFR level B2, pronunciation, examples, and quiz.
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Definition
nounThe chemical element with an atomic number of 7 and atomic weight of 14.0067. It is a colorless and odorless gas.
nounThe chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067. It is a colorless and odorless gas.
Sentence Examples
The air we breathe consists of oxygen and nitrogen.
There are several irregularities in the nitrogen cycle.
CEFR Practice Quiz
The air we breathe is mostly composed of the gas ____, which is inert.
CEFR Practice Quiz (Alternate)
The Earth's atmosphere is composed of approximately 78 percent ____ gas.
Word Origin & History
Borrowed from French nitrogène (coined by French chemist and physician Jean-Antoine Chaptal in 1790). By surface analysis, nitro- + -gen. See also niter.
Literary Quotations & Historical Citations
"All life depends on nitrogen; it is the building block from which nature assembles amino acids, proteins, and nucleic acids; the genetic information that orders and perpetuates life is written in nitrogen ink."
— 2006, Michael Pollan, The Omnivore's Dilemma, The Penguin Press, →ISBN, page 42:
"Volatiles of kecap manis and its raw materials were extracted using Likens-Nickerson apparatus with diethyl ether as the extraction solvent. The extracts were then dried with anhydrous sodium sulfate, concentrated using a rotary evaporator followed by flushing using nitrogen until the volume was about 0.5 ml."
— 1997, A. J. Taylor, D. S. Mothram, editors, Flavour Science: Recent Developments, Elsevier, →ISBN, page 63:
Explore More B2 Vocabulary Words
CEFR Practice Quiz
The air we breathe is mostly composed of the gas ____, which is inert.
CEFR Practice Quiz (Alternate)
The Earth's atmosphere is composed of approximately 78 percent ____ gas.