Definition of yellowism in English:

yellowism

Pronunciation /ˈjɛləʊɪz(ə)m/

noun

historical US
  • Sensational or inaccurate newspaper journalism, designed to attract a wide readership; (with reference to newspaper journalism) sensational or inaccurate style.

Origin

Late 19th century; earliest use found in Indiana State Journal (Indianapolis). From yellow + -ism.