Definition of genericism in US English:

genericism

noun

rare
  • The quality or state of being generic; concentration on a generic style or approach; (in early use) specifically the use of words to apply generically.

Origin

Mid 19th century; earliest use found in George Faber (1773–1854), Church of England clergyman and religious writer. From generic + -ism.

Pronunciation

genericism

/dʒɪˈnɛrɪsɪz(ə)m/