a mechanical device in a camera that controls size of aperture of the lens; "the new cameras adjust the diaphragm automatically"
electro-acoustic transducer that vibrates to receive or produce sound waves
a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix
(anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration
a member of the Union Army during the American Civil War
national; especially in reference to the government of the United States as distinct from that of its member units; "the Federal Bureau of Investigation"; "federal courts"; "the federal highway program"; "federal property"
characterized by or constituting a form of government in which power is divided between one central and several regional authorities; "a federal system like that of the United States"; "federal governments often evolved out of confederations"
of or relating to the central government of a federation; "a federal district is one set aside as the seat of the national government"