"Polydar" is a conjugation of the words "Polyamory" and "Radar." Much like Gaydar or Spiderman's "Spidy" sense, the new term is used to refer to the intuitive gift of detecting someone's inclination or capacity to be in multiple loving relationships with the consent of everyone involved.
2. I know she's married but my Polydar tells me there's something more going on.
3. Whenever I go to a cuddle partyTM it really puts a wrench in my polydar.
4. My lover Tahl has an overzealous Polydar and thinks everyone is poly.
5. My polydar is spot on and I can sniff a poly person from ten paces away.