Definition of Lyon, Mary Mason in English:

Lyon, Mary Mason

Syllabification: Ly·on, Mary Mason
Pronunciation: /ˈlīən
 
/
( 1797–1849), US educator. She founded Mount Holyoke Female Seminary (later Mount Holyoke College) in South Hadley, Massachusetts, in 1837 and served as its first president 1837–49.

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Word of the day neoteny
Pronunciation: nēˈätn-ē
noun
retention of juvenile features in the adult animal