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aphid

(Encyclopedia)aphid or plant louse, tiny, usually green, soft-bodied, pear-shaped insect injurious to vegetation. It is also called greenfly and blight. Aphids are mostly under 1⁄4 in. (6 mm) long. Some are wingl...

anthropology

(Encyclopedia)anthropology, classification and analysis of humans and their society, descriptively, culturally, historically, and physically. Its unique contribution to studying the bonds of human social relations ...

smallpox

(Encyclopedia)smallpox, acute, highly contagious disease causing a high fever and successive stages of severe skin eruptions. Occurring worldwide in epidemics, it killed up to 40% of those who contracted it and acc...

San Diego

(Encyclopedia)San Diego săn dēāˈgō [key], city (1990 pop. 1,110,549), seat of San Diego co., S Calif., on San Diego Bay; inc. 1850. San Diego includes the unincorporated communities of La Jolla and Spring Vall...

Oxford, University of

(Encyclopedia)Oxford, University of, at Oxford, England, one of the oldest English-language universities in the world. The university was a leading center of learning throughout the Middle Ages; such scholars as Ro...

personality

(Encyclopedia)personality, in psychology, the patterns of behavior, thought, and emotion unique to an individual, and the ways they interact to help or hinder the adjustment of a person to other people and situatio...

electronics industry

(Encyclopedia)electronics industry, the business of creating, designing, producing, and selling devices such as radios, televisions, stereos, computers, semiconductors, transistors, and integrated circuits (see ele...

Cheyenne, indigenous people of North America

(Encyclopedia)Cheyenne shīănˈ, –ĕnˈ [key], indigenous people of North America whose language belongs to the Algonquian branch of the Algonquian-Wakashan linguistic stock (see Native American languages). The ...

Franks

(Encyclopedia)Franks, group of Germanic tribes. By the 3d cent. a.d., they were settled along the lower and middle Rhine. The two major divisions were the Salian Franks in the north and the Ripuarian Franks in the ...

Apache

(Encyclopedia)Apache əpăchˈē [key], Native North Americans of the Southwest composed of six culturally related groups. They speak a language that has various dialects and belongs to the Athabascan branch of the...