Definition of Priestley, Joseph in English:

Priestley, Joseph

Syllabification: Priest·ley, 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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Word of the day flagitious
Pronunciation: fləˈdʒɪʃəs
adjective
(of a person or their actions) criminal; villainous