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nitrous acid an unstable, inorganic nitrogen compound that occurs only in solution or in its salts as nitrites.
nitrous oxide a colorless, nonflammable, inorganic gas with a sweet taste and smell, used as an anesthetic; laughing gas.
nitty full of lice or lice eggs.
nitty-gritty (informal) the fundamental elements, issues, details, or the like.
nitwit (informal) a dimwitted, foolish, or stupid person.
NJ abbreviation of "New Jersey," an eastern U.S. state on the Atlantic coast between New York and Delaware.
NLRB abbreviation of "National Labor Relations Board."
NM abbreviation of "New Mexico," a southwestern U.S. state between Texas and Arizona.
NNE abbreviation of "north-northeast," a point on the compass halfway between north and northeast.
NNW abbreviation of "north-northwest," a point on the compass halfway between north and northwest.
No symbol of the chemical element nobelium.
no1 a negative used as a denial, disagreement, or refusal. [7 definitions]
no2 not any. [2 definitions]
no. abbreviation of "number."
NOAA abbreviation of National Oceanic and Atmospheric Administration.
no-account of little worth; no good.
Noah according to the Old Testament, the Hebrew patriarch who was commanded by God to build an ark on which to board his family and two of every kind of creature to save them from the great flood that was to engulf the world.
Nobelist a winner of the Nobel prize.
nobelium a synthetic radioactive chemical element of the actinide series that has 102 protons in each nucleus. (symbol: No)
Nobel prize any of the international prizes awarded annually for achievements in physics, chemistry, economics, medicine or physiology, literature, and the promotion of peace, by a Swedish foundation established according to the bequest of Alfred Nobel.
nobility the persons of noble rank or status in a country collectively; aristocracy. [2 definitions]