Definition of conservationism in English:

conservationism

Pronunciation /ˌkɒnsəˈveɪʃ(ə)nɪz(ə)m/ /ˌkɒnsəˈveɪʃənɪz(ə)m/

noun

  • Support for or advocacy of conservation, especially of the natural environment.

Origin

Early 20th century; earliest use found in The New York Independent. From conservation + -ism.