A habitational surname from Old French. / A male given name transferred from the surname. / A city in Arkansas. / A city, the county seat of Prowers County, Colorado.

A county of Alabama, United States. County seat: Vernon. / A county of Georgia, United States. County seat: Barnesville. / A county of Mississippi, United States. County seat: Purvis.

(evolutionary theory, historical) The theory that structural variations, characteristic of species and genera, are produced in animals and plants by the direct influence of physical environments, and especially, in the case of animals, by effort, or by use or disuse of certain organs.

plural of Lamarckist

A proponent of Lamarckism.

A supporter or an advocate of Lamarckism.

Of or pertaining to Lamarckism.

plural of Lamarckian

Alternative form of Lamarckism

(biology, historical) Lamarckism as revived, modified, and expounded by later biologists, especially as maintaining that the offspring inherits traits acquired by the parent from change of environment, use or disuse of parts, etc.