Definition of Muir, John in English:

Muir, John

Syllabification: Muir, John
Pronunciation: /myo͝or
( 1838–1914), US naturalist, born in Scotland. An early advocate of wilderness preservation, he founded the Sierra Club in 1892.

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
retention of juvenile features in the adult animal