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octopus

(Encyclopedia)octopus, cephalopod mollusk having no shell, eight muscular arms or tentacles, a pouch-shaped body, and two large, highly developed eyes. The prey (crabs, lobsters, and other shellfish) is seized by t...

Le Nôtre, André

(Encyclopedia)Le Nôtre, André äNdrāˈ lənōˈtrə [key], 1613–1700, the most famous landscape architect in French history, b. near the Tuileries; studied drawing with Simon Vouet at the Louvre. Le Nôtre's f...

adolescence

(Encyclopedia)adolescence, time of life from onset of puberty to full adulthood. The exact period of adolescence, which varies from person to person, falls approximately between the ages 12 and 20 and encompasses b...

dwarf planet

(Encyclopedia)dwarf planet, a nonluminous body of rock or gas that orbits the sun and has a rounded shape due to its gravity. Unlike a planet, a dwarf planet is not capable of clearing its orbit of smaller objects ...

nonsporting dog

(Encyclopedia)nonsporting dog, classification used by breeders and kennel clubs to designate dogs that may formerly have been bred to hunt or work but that are now raised chiefly as house pets and companions. The f...

eukaryote

(Encyclopedia)eukaryote yo͞okârˈē-ōtˌ [key], a cell or organism composed of cells that have a membrane-bound nucleus and organelles (mitochondria, chloroplasts; see cell, in biology) and genetic material orga...

Cepheid variables

(Encyclopedia)Cepheid variables sēˈfēĭd [key], class of variable stars that brighten and dim in an extremely regular fashion. The periods of the fluctuations (the time to complete one cycle from bright to dim a...

hydrothermal vent

(Encyclopedia)hydrothermal vent, crack along a rift or ridge in the deep ocean floor that spews out water heated to high temperatures by the magma under the earth's crust. Some vents are in areas of seafloor spread...

Île-de-France, region, France

(Encyclopedia)Île-de-France ēl-də-fräNs [key], region and former province, N central France, in the center of the Paris basin, a fertile depression where the Marne and Ouse rivers join the Seine. Containing par...

Bhopal

(Encyclopedia)Bhopal bōˈpäl [key], former principality, Madhya Pradesh state, central India. A region of rolling downs and thickly forested hills, it is predominantly agricultural. Its Buddhist monuments include...