Lamarckism

[luh-mahr-kiz-uh m] /ləˈmɑr kɪz əm/
noun
1.
the Lamarckian theory that characteristics acquired by habit, use, or disuse may be passed on to future generations through inheritance.
Origin
1880-85; Lamarck + -ism
British Dictionary definitions for Lamarckism

Lamarckism

/lɑːˈmɑːkɪzəm/
noun
1.
the theory of organic evolution proposed by Lamarck, based on the principle that characteristics of an organism modified during its lifetime are inheritable See also acquired characteristic, Neo-Lamarckism