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Dinoflagellata

(Encyclopedia)dinoflagellata dīˌnōflăjˌəlätˈə, –lāˈtə [key], phylum (division) of unicellular, mostly marine algae, called dinoflagellates. In some classification systems this division is called Pyrrh...

aberration

(Encyclopedia)CE5 A. Spherical aberration: Light rays near the edge of the lens are bent more and brought to focus nearer to the lens. B. Chromatic aberration: Shorter wavelengths (higher frequencies) are bent m...

nitric acid

(Encyclopedia)nitric acid, chemical compound, HNO3, colorless, highly corrosive, poisonous liquid that gives off choking red or yellow fumes in moist air. It is miscible with water in all proportions. It forms an a...

sun grebe

(Encyclopedia)sun grebe, common name for a tropical, mainly aquatic bird of the family Heliornithidae. Sun grebes, also called finfoots, are remarkable for their colorful, puffy-toed, webbed feet, which may serve a...

spruce

(Encyclopedia)spruce, any plant of the genus Picea, evergreen trees or shrubs of the family Pinaceae (pine family) widely distributed in the Northern Hemisphere. The needles are angular in cross section, rather tha...

De Mézières y Clugny, Athanase

(Encyclopedia)De Mézières y Clugny, Athanase ätänäzˈ də māzyĕrˈ ē klünēˈ [key], c.1715–1779, explorer and Indian agent in Spanish Louisiana, b. Paris. He went to Louisiana c.1733. When France ceded ...

Cornplanter

(Encyclopedia)Cornplanter, c.1740–1836, chief of the Seneca. The son of a Native American mother and a white father, he acquired great influence among the Seneca and in the American Revolution led war parties for...

field spaniel

(Encyclopedia)field spaniel, breed of medium-sized sporting dog developed in England from crosses between cocker spaniels and Sussex spaniels. It stands about 18 in. (45.7 cm) high at the shoulder and weighs about ...

fescue

(Encyclopedia)fescue fĕsˈkyo͞o [key], any of some 100 species of introduced Old World grasses of the genus Festuca. Meadow fescue and tall, or reed, fescue are excellent forage crops and the Chewing's, red, and ...

Ivrea

(Encyclopedia)Ivrea ēvrĕˈä [key], city, Piedmont, NW Italy, on the Dora Baltea River. It is a commercia...