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gum, colloidal plant substance

(Encyclopedia)gum, term commonly applied to any of a wide variety of colloidal substances somewhat similar in appearance and general characteristics, exuded by or extracted from plants. In this classification, howe...

Jaspers, Karl

(Encyclopedia)Jaspers, Karl kärl yäsˈpərs [key], 1883–1969, German philosopher and psychopathologist, b. Oldenburg. After receiving his medical degree (1909) he became (1914) lecturer in psychology and in 192...

zoology

(Encyclopedia)zoology, branch of biology concerned with the study of animal life. From earliest times animals have been vitally important to man; cave art demonstrates the practical and mystical significance animal...

cladistics

(Encyclopedia)cladistics fīˌlōjənĕtˈĭk [key], an approach to the classification of living things in which organisms are defined and grouped by the possession of one or more shared characteristics (called cha...

epistle

(Encyclopedia)epistle ĭpĭsˈəl [key], in the Bible, a letter of the New Testament. The Pauline Epistles (ascribed to St. Paul) are Romans, First and Second Corinthians, Galatians, Ephesians, Philippians, Colossi...

epidemic

(Encyclopedia)epidemic, outbreak of disease that affects a much greater number of people than is usual for the locality or that spreads to regions where it is ordinarily not present. A disease that tends to be rest...

mushroom

(Encyclopedia)CE5 The poisonous mushroom Amanita mushroom, type of basidium fungus characterized by spore-bearing gills on the underside of the umbrella- or cone-shaped cap. The name toadstool is popularly rese...

oils

(Encyclopedia)oils, term commonly used to indicate a variety of greasy, fluid substances that are, in general, viscous liquids at ordinary temperatures, less dense than water, insoluble in water but soluble in alco...

panda

(Encyclopedia)panda, name for two unrelated nocturnal Asian mammals of the order Carnivora, red pandas, genus Ailurus, and the giant panda, Ailuropoda melanoleuca. Red pandas, also known as lesser pandas and cat be...

spectral class

(Encyclopedia)CE5 spectral class, in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically....