|a fool or simpleton; ninny.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
Lamarck La·marck (lə-märk', lä-), Chevalier de Jean Baptiste Pierre Antoine de Monet. 1744-1829.
French naturalist noted for his theories on evolution by adaptative modification and for classifying animals into vertebrates and invertebrates.
|Lamarck (lə-märk', lä-) Pronunciation Key
French naturalist who introduced the taxonomic distinction between vertebrates and invertebrates. His theory that the acquired characteristics of a species could be inherited by later generations was a forerunner to Charles Darwin's theory of evolution, although it was eventually discredited.