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| an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language. |
| a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S. |
| sociology (sō'sē-ŏl'ə-jē) Pronunciation Key
The scientific study of human social behavior and its origins, development, organizations, and institutions. |
The systematic study of human society, especially present-day societies. Sociologists study the organization, institutions, and development of societies, with a particular interest in identifying causes of the changing relationships among individuals and groups. (See social science.)