patency

 
Pronunciation: /ˈpeɪt(ə)nsi/

noun

[mass noun] Medicine
  • the condition of being open or unobstructed: the procedure was successful in restoring the patency of the fallopian tubes [as modifier]: patency rates
  • the condition of showing detectable parasite infection: a complication, once patency is established in the bitch, is contamination of the environment with eggs