Sentence:  Interestingly, despite the percentages above illustrating that many <WSD>polyfamilies</WSD> in  the Polyamory Survey had children or wanted children, only approximately 30 percent of survey respondents had told their children about their poly relationships or their desire to be in one... 
Meaning of the word marked with <WSD> tags:  A group of people in a polyamorous relationship, who consider each other as family.