nuclear family

. a family unit consisting of a married couple and their offspring. A grandparent or a spouse of one of the children may be included.
Found on http://www.umanitoba.ca/faculties/arts/anthropology/manarchnet/appendices/g

nuclear family

[n] - a family consisting of parents and their children and grandparents of a marital partner
Found on http://www.webdictionary.co.uk/definition.php?query=nuclear%20family

nuclear family

the immediate family consisting of parents (or parent) and their dependent children. Compare extended family.
Found on http://www.polity.co.uk/cbs3/PDF/Glos.pdf

nuclear family

A family composed of husband and wife with their children. ... (12 Dec 1998) ...
Found on http://www.encyclo.co.uk/local/20973

nuclear family

conjugal family noun a family consisting of parents and their children and grandparents of a marital partner
Found on http://wordnetweb.princeton.edu/perl/webwn?s=nuclear%20family
No exact match found