n

the 14th letter of the Roman alphabet ; (of a solution) concentration expressed in gram equivalents of solute per liter ; a unit of force equal to the force that imparts an acceleration of 1 m/sec/sec to a mass of 1 kilogram; equal to 100,000 dynes ; the cardinal compass point that is at 0 or 360 degrees ; a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues ;

n'djamena

the capital and largest city of Chad; located in the southwestern on the Shari river ;

n-type semiconductor

a semiconductor in which electrical conduction is due chiefly to the movement of electrons ;

n. y. stock exchange

a stock exchange in New York ;

n.b.

a Latin phrase (or its abbreviation) used to indicate that special attention should be paid to something; "the margins of his book were generously supplied with pencilled NBs" ;

na

a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt) ;

na-dene

a family of North American Indian languages ;

nabalus

genus of North American and east Asian perennial herbs; sometimes included in genus Prenanthes ;

nabalus alba

herb of northeastern North America having drooping clusters of yellowish-white flowers; sometimes placed in genus Prenanthes ;

nabalus serpentarius

common perennial herb widely distributed in the southern and eastern United States having drooping clusters of pinkish flowers and thick basal leaves suggesting a lion's foot in shape; sometimes placed in genus Prenanthes ;

nablus

an ancient city in the West Bank north of Jerusalem; the home of Jacob in biblical times ;

nabob

a wealthy man (especially one who made his fortune in the Orient) ; a governor in India during the Mogul empire ;

nabokov

United States writer (born in Russia) (1899-1977) ;

naboom

small tree of dry open parts of southern Africa having erect angled branches suggesting candelabra ;

nabothian cyst

a cyst that forms in the nabothian glands of the uterine cervix ;

nabothian follicle

a cyst that forms in the nabothian glands of the uterine cervix ;

nabothian gland

one of many small glands of the uterine cervix that secrete mucus ;

nabu

Babylonian god of wisdom and agriculture and patron of scribes and schools ;

nabumetone

a nonsteroidal anti-inflammatory drug (trade name Relafen) ;

nac

a council consisting of permanent representatives of all the member countries of NATO; has political authority and powers of decision ;

nacelle

a streamlined enclosure for an aircraft engine ;

nacho

a tortilla chip topped with cheese and chili-pepper and broiled ;

nacimiento

a mountain peak in the Andes in Argentina (21,302 feet high) ;

nacre

the iridescent internal layer of a mollusk shell ;

nacreous cloud

a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon ;

nad

a coenzyme present in most living cells and derived from the B vitamin nicotinic acid; serves as a reductant in various metabolic processes ;

nada

a quantity of no importance; "it looked like nothing I had ever seen before"; "reduced to nil all the work we had done"; "we racked up a pathetic goose egg"; "it was all for naught"; "I didn't hear zilch about it" ;

nada daiquiri

a daiquiri made without alcohol ;

nadine gordimer

South African novelist and short-story writer whose work describes the effects of apartheid (born in 1923) ;

nadir

the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected ; an extreme state of adversity; the lowest point of anything ;

nadolol

a beta-adrenergic blocking agent (trade name Corgard) that is used to treat hypertension and angina ;

nadp

a coenzyme similar to NAD and present in most living cells but serves as a reductant in different metabolic processes ;

naegele's rule

rule for calculating an expected delivery date; subtract three months from the first day of the last menstrual period and add seven days to that date ;

naemorhedus

gorals ;

naemorhedus goral

small goat antelope with small conical horns; of southern Asian mountains ;

nafcil

a penicillinase-resistant form of penicillin (trade name Nafcil) used (usually in the form of its sodium salt) to treat infections caused by penicillin-resistant strains of staphylococci ;

nafcillin

a penicillinase-resistant form of penicillin (trade name Nafcil) used (usually in the form of its sodium salt) to treat infections caused by penicillin-resistant strains of staphylococci ;

nafta

an agreement for free trade between the United States and Canada and Mexico; became effective in 1994 for ten years ;

nafud

a desert in northern Saudi Arabia that is noted for its red sand and violent winds ;

nag

an old or over-worked horse ; someone (especially a woman) who annoys people by constantly finding fault ;