Causes of Perihilar or diffuse infiltrates: The following medical conditions are some of the possible causes of Perihilar or diffuse infiltrates. There are likely to be other possible causes, so ask your doctor about your symptoms.
â¢ NUCLEAR FAMILY (noun). The noun NUCLEAR FAMILY has 1 sense: 1. a family consisting of parents and their children and grandparents of a marital partner. Familiarity information: NUCLEAR FAMILY used as a noun is very rare.
The Rise of the Nuclear Family. The phrase nuclear family became commonly known during the first half of the 20 th century. Historically, households in many societies had often consisted of groups of extended family members. In a more mobile, post-industrial revolution society, there was a greater emphasis on the nuclear family. Smaller family units could move more easily to find economic opportunities in other areas.