Materfamilias: The female head of the family; the mother figure. Materfamilias is the Latin for mother of the household. It is compounded from mater (mother) + familias, which comes from familia (household), from famulus (servant, slave). The masculine counterpart is the paterfamilias. Found on http://www.medterms.com/script/main/art.asp?articlekey=32669
materfamilias (s), matresfamilias (pl) 1. Literally, 'mother of the family'. 2. A woman described in her role as head of a household or as the mother of her children. Found on http://www.wordinfo.info/words/index/info/view_unit/1261/