polygenesis
Concise Oxford English Dictionary © 2008 Oxford University Press:
polygenesis /ˌpɒlɪˈdʒɛnɪsɪs/ (also polygeny /pəˈlɪdʒ(ə)ni/)
▶noun origination from a number of independent sources or places.
– derivatives
polygenetic adjective.
polygenetic adjective.
'polygenesis' also found in these Oxford entries:

