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neural network

(Encyclopedia)neural network or neural computing, computer architecture modeled upon the human brain's interconnected system of neurons. Neural networks imitate the brain's ability to sort out patterns and learn fr...

analgesic

(Encyclopedia)analgesic ănˌəljēˈzĭk [key], any of a diverse group of drugs used to relieve pain. Analgesic drugs include the nonsteroidal anti-inflammatory drugs (NSAIDs) such as the salicylates, acetaminophe...

lamprey

(Encyclopedia)lamprey, name for several primitive marine and freshwater jawless fishes of the order Petromyzontiformes. As in the other jawless fish, the hagfish, the adult lamprey retains the notochord, the suppor...

distemper

(Encyclopedia)distemper, in veterinary medicine, highly contagious, catarrhal, often fatal disease of dogs. It also affects wolves, foxes, mink, raccoons, and ferrets. Distemper is caused by a filtrable virus that ...

SI, abbreviation for the International System of Units

(Encyclopedia)SI: see International System of Units. ...

Ercole de' Roberti

(Encyclopedia)Ercole de' Roberti ārkôˈlā dā rōbĕrˈtē [key], 1456?–1496, Italian painter of the Ferrarese school. He probably began his career by assisting Francesco Cossa in the decoration of the Schifan...

Gilman, Charlotte Perkins

(Encyclopedia)Gilman, Charlotte Perkins, 1860–1935, American feminist and reformer, b. Hartford, Conn.; great-granddaughter of Lyman Beecher. Prominent as a lecturer and writer on the labor movement and feminism,...

Newcastle disease

(Encyclopedia)Newcastle disease, pneumoencephalitis, acute viral disease of domestic poultry. Newcastle disease is characterized by sneezing, coughing, and nervous behavior. Affected birds may show tremors, circlin...

Brachiopoda

(Encyclopedia)CE5 Internal anatomy of a lamp shell, Magellania, representative of the phylum Brachiopoda Brachiopoda brākēŏpˈədə [key], phylum of shelled sessile or sedentary marine animals, commonly know...

gastropod

(Encyclopedia)CE5 Internal anatomy of a snail, Helix aspersa, representative mollusk of the class Gastropoda gastropod, member of the class Gastropoda, the largest and most successful class of mollusks (phylum ...