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neurotransmitter

(Encyclopedia)neurotransmitter, chemical that transmits information across the junction (synapse) that separates one nerve cell (neuron) from another nerve cell or a muscle. Neurotransmitters are stored in the nerv...

price

(Encyclopedia)price, amount of money for which a unit of goods or services is exchanged. Price is equivalent to market value and may or may not measure the intrinsic value of the goods or services to the buyer or s...

AZT

(Encyclopedia)AZT or zidovudine zīdōˈvyo͞odēnˌ [key], drug used to treat patients infected with the human immunodeficiency virus (HIV), which causes AIDS; also called azidothymidine. Originally developed in 1...

helicopter

(Encyclopedia)helicopter, type of aircraft in which lift is obtained by means of one or more power-driven horizontal propellers called rotors. When the rotor of a helicopter turns it produces reaction torque which ...

marijuana

(Encyclopedia)marijuana or marihuana, drug obtained from the flowering tops, stems, and leaves of the hemp plant, Cannabis sativa (see hemp) or C. indica; the latter species can withstand colder climates. It is one...

Neer, Aert van der

(Encyclopedia)Neer, Aert van der ärt vän dĕr nār [key], c.1603–77, Dutch landscape painter. Working mostly in Amsterdam, he excelled in painting unusual light effects, such as moonlight, sunsets, conflagratio...

Nordhaus, William Dabney

(Encyclopedia)Nordhaus, William Dabney, 1941–, American economist, b. Albuquerque, N.Mex., Ph.D. Massachusetts Institute of Technology, 1967. A professor at Yale since 1967, he has focused on the economic effects...

Levine, Jack

(Encyclopedia)Levine, Jack ləvīnˈ [key], 1915–2010, American painter, b. Boston. Levine began his career with the Federal Arts Project. His savagely realistic paintings, executed with diffused, prismatic textu...

Mirrlees, Sir James Alexander

(Encyclopedia)Mirrlees, Sir James Alexander, 1936–2018, Scottish economist, Ph.D. He taught at Cambridge (1963–69, 1995–2003), Oxford (1969–95), and Chinese University of Hong Kong (2002–18). Building on ...

Molnár, Ferenc

(Encyclopedia)Molnár, Ferenc fĕˈrĕnts môlˈnär [key], 1878–1952, Hungarian dramatist and novelist. He studied law in Budapest and Geneva and was for some time a journalist in Budapest. He was a prolific aut...