Definition of Lamarckian in English:

Lamarckian

adjective

  • Relating to or characteristic of the French naturalist Jean Baptiste de Lamarck or his theory about the cause of organic evolution.

    ‘the mechanism of Lamarckian evolution’

noun

  • An adherent of the French naturalist Jean Baptiste de Lamarck's theory about the cause of organic evolution.

    ‘a Lamarckian who believes that acquired characteristics can be inherited’

Pronunciation

Lamarckian

/ləˈmɑːkɪən/