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AIDS , Aids 
  n acronym for acquired immune (or immuno-) deficiency syndrome: a condition, caused by a virus, in which certain white blood cells (lymphocytes) are destroyed, resulting in loss of the body's ability to protect itself against disease. AIDS is transmitted by sexual intercourse, through infected blood and blood products, and through the placenta 


AIDS-related complex 
  n  See   ARC 
visual aids 
  pl n devices, such as films, slides, models, and blackboards, that display in visual form material to be understood or remembered