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Neolithic (sometimes l.c.) designating the latter part of the Stone Age, from about 8,000 B.C. to about 3,500 B.C., characterized by the use of polished stone tools and the beginnings of farming.
neologism a new word, phrase, or usage. [2 definitions]
neologize to coin new words, or make new meanings for existing words.
neomycin an antibiotic drug used to treat infections, esp. of the skin and eyes.
neon a chemical element of the inert gas group that has ten protons in each nucleus and that is used in liquid form as a refrigerant, and in gaseous form as an atmosphere for electrical discharge lamps because it glows a brilliant orange when excited by electricity. (symbol: Ne) [5 definitions]
neonate a newborn child, esp. one in its first month of life.
neophyte a beginner or novice at any activity. [3 definitions]
neoplasm a new growth of tissue that is abnormal or different from surrounding tissue; growth or tumor.
Neoplatonism a philosophical school and doctrine founded by Plotinus in the third century A.D. that asserts that all existence flows from a single source, with which the soul seeks to unite.
neoprene a synthetic, weather-resistant rubber used in paint and putty, as a lining or covering, and in shoe soles.
Nepal an Asian country between India and Tibet.
nepenthe in ancient writings, a drink or potion said to have been used to dull pain and sorrow and induce forgetfulness. [2 definitions]
nephew a son of one's brother, brother-in-law, sister, or sister-in-law.
nephrectomy surgical removal of one or both kidneys.
nephridium the excretory organ found in many invertebrates. [2 definitions]
nephrite a compact mineral that is a variety of jade and that varies in color from whitish to dark green.
nephritis inflammation of the kidneys.
nephro- kidney.
nephrology the branch of medicine that deals with the kidneys.
nephropathy any disease of the kidney.
ne plus ultra (Latin) the highest point, esp. of achievement or excellence; ultimate.