Definition of Priestley, Joseph in English:

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Priestley, Joseph

Pronunciation: /ˈprēs(t)lē/
(1733–1804), English scientist and theologian. His chief work was on the chemistry of gases, in which his most significant discovery was of “dephlogisticated air” (oxygen) in 1774; he demonstrated that it was important to animal life and that plants emit it in sunlight.

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Syllabification: Priest·ley, Joseph

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