Definition of penetrancy in English:

penetrancy

noun

rare
  • Penetrating quality; penetrativeness (literal and figurative).

Origin

Late 16th century; earliest use found in Philip Sidney (1554–1586), author and courtier. From classical Latin penetrant-, penetrāns penetrant: see -ancy.

Pronunciation

penetrancy

/ˈpɛnɪtrənsi/