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nopal any of various cactuses that bear red or yellow flowers, esp. a tropical prickly pear that bears purple fruit.
no-par not having a face value, as some corporate stocks.
nope (informal) no.
nor used to introduce a subsequent negative statement, esp. after a phrase using "neither". [2 definitions]
noradrenaline a hormone secreted by the adrenal glands and released by the sympathetic nerve endings that triggers the "fight-or-flight response" and is used medically to constrict blood vessels; norepinephrine.
Nordic of, pertaining to, belonging to, or characteristic of a Caucasian people found esp. in the Scandinavian countries, who are tall, long-headed, blond, and blue-eyed. [2 definitions]
nor'easter a strong wind or storm coming from the northeast.
norepinephrine a hormone, secreted by the adrenal glands and released at the sympathetic nerve endings, that triggers the "fight-or-flight response" and is used medically to constrict blood vessels; noradrenaline.
Norfolk jacket a loosely belted, single-breasted man's jacket with pockets on either side of the lower front and two box pleats in front and back from the yoke to the hem.
noria a wheel fitted with buckets around the rim, used to lift water, as from a river to an irrigation ditch, esp. in Spain and the Orient.
norm a model or standard, esp. one that is generally accepted or followed. [2 definitions]
normal conforming to a standard, pattern, or general average, or to what is expected; usual; regular. [4 definitions]
normalcy the character or condition of being normal; normality.
normal distribution function a function that represents statistical data as a symmetrical bell-shaped curve; Gaussian distribution function.
normalize to cause to conform to or return to a normal state. [2 definitions]
normally in a normal way; to the usual degree. [2 definitions]
normal school formerly, a two-year school that trained high school graduates to be elementary school teachers.
Norman a member of the Scandinavian people who conquered Normandy in the tenth century. [5 definitions]
Norman Conquest the conquest of England by the Normans, led by William the Conqueror, in 1066.
Normandy a French province on the English Channel.
Norman French the people of mixed Scandinavian and French ancestry who invaded England in 1066, or their language as used in Normandy and England. [2 definitions]