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impasto

(Encyclopedia)impasto ĭmpăsˈtō, –päˈstō [key], thickly applied paint that projects from the picture surface. Such works as Childe Hassam's Allies Day (1917; National Gall. of Art, Washington, D.C.) and Han...

Magendie, François

(Encyclopedia)Magendie, François fräNswäˈ mäzhäNdēˈ [key], 1783–1855, French physician. He taught at the Collège de France and is considered a founder of experimental physiology. He distinguished the mot...

Brownian movement

(Encyclopedia)Brownian movement or motion, zigzag, irregular motion exhibited by minute particles of matter when suspended in a fluid. The effect has been observed in all types of colloidal suspensions (see colloid...

causality

(Encyclopedia)causality, in philosophy, the relationship between cause and effect. A distinction is often made between a cause that produces something new (e.g., a moth from a caterpillar) and one that produces a c...

darmstadtium

(Encyclopedia)darmstadtium, artificially produced radioactive chemical element; symbol Ds; at. no. 110; mass number of most stable isotope 281; m.p., b.p., sp. gr., and valence unknown. Situated in Group 10 of the ...

meitnerium

(Encyclopedia)meitnerium mītnĭrˈēəm [key], artificially produced radioactive chemical element; symbol Mt; at. no. 109; mass number of most stable isotope 276; m.p., b.p., sp. gr., and valence unknown. Situated...

meristem

(Encyclopedia)meristem mĕrˈistĕmˌ [key], a specialized section of plant tissue characterized by cell division and growth. Much of the mature plant's growth is provided by meristems. Apical meristems found at th...

nobelium

(Encyclopedia)nobelium nōbēˈlēəm [key], artificially produced radioactive chemical element; symbol No; at. no. 102; mass no. of most stable isotope 259; m.p. 827℃; b.p. and density unknown; valence +2, +3. I...

Carol II

(Encyclopedia)Carol II, 1893–1953, king of Romania, son of King Ferdinand and Queen Marie. While crown prince, he contracted a morganatic marriage with Zizi Labrino but divorced her to marry (1921) Princess Helen...

United States Naval Observatory

(Encyclopedia)United States Naval Observatory, a federal astronomical observatory, located in Washington, D. C. It evolved from the Navy's oldest scientific institution, the Depot of Charts and Instruments, founded...