Ernst Heinrich [ernst hahyn-rikh] , 1834–1919, German biologist and philosopher of evolution.

Haeckelian [he-kee-lee-uhn] , adjective, noun
Haeckelism, noun
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Haeckel (German ˈhɛkəl)
Ernst Heinrich (ɛrnst ˈhainrɪç). 1834--1919, German biologist and philosopher. He formulated the recapitulation theory of evolution and was an exponent of the philosophy of materialistic monism

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Medical Dictionary

Haeckel Haeck·el (hěk'əl), Ernst. 1834-1919.

German philosopher and naturalist who supported Darwin's theory and mapped a genealogical tree relating all animal life.

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Science Dictionary
Haeckel   (hěk'əl)  Pronunciation Key 
German naturalist who was the first to attempt a genealogical tree of all animals. He was also one of the first scientists to publicly support Darwin's theory of evolution. His own ideas about evolution attracted popular attention, and though they were later disproved, they helped to stimulate biological research.
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