Lamarckian

[ luh-mahr-kee-uh n ]

/ ləˈmɑr ki ən /

of or relating to Jean de Lamarck or his theory of organic evolution.

a person who holds this theory.

Origin of Lamarckian

First recorded in 1840–50; Lamarck + -ian

He, being a Lamarckian, ascribes this to the inherited effects of use.

The Making of Species |Douglas Dewar
Neither jaws nor brain can have been evolved on the Lamarckian principle.

Evolution in Modern Thought |Ernst Haeckel
In this controversy, however, there was another string to the Lamarckian bow.

Parallel Paths |Thomas William Rolleston
To talk of climate or Lamarckian habit producing such adaptations to other organic beings is futile.

The Life and Letters of Charles Darwin, Volume I (of II) |Charles Darwin

Lamarckian views have never lacked defenders here and in America.

Unconscious Memory |Samuel Butler

Lamarckian

/ (lɑːˈmɑːkɪən) /

of or relating to Lamarck

a supporter of Lamarckism