or  Mar*fan syndrome  n :  a disorder of connective tissue that is inherited as a simple dominant trait, is caused by a defect in the gene controlling the production of fibrillin, and is characterized by abnormal elongation of the long bones and often by ocular and circulatory defects - called also Marfan's 
 
Marfan, Antonin Bernard Jean (1858-1942), French pediatrician. Marfan concerned himself with the prevention, diagnosis, and treatment of children's diseases. In 1892 he described spastic paralysis in children with hereditary syphilis. In 1896 he described a syndrome marked by arachnodactyly, ectopia of the crystalline lens, and abnormal flexibility of the joints. The syndrome now bears his name.
 
 
 
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