torr
n.
unit of pressure equal to 133.32 pascals
Torr
John Torrey
John Torrey (
August 15,
1796 –
March 10,
1873) was an
American botanist.Torrey was born in
New York. When he was 15 or 16 years of age his father received a prison appointment at Greenwich, and there he made the acquaintance of
Amos Eaton, a pioneer of
natural history studies in America. He thus learned the elements of botany, as well as something of
mineralogy and
chemistry. In
1815 he began the study of
medicine, qualifying in
1818. In the following year he issued his Catalogue of Plants growing spontaneously within Thirty Miles of the City of New York, and in
1824 he issued the first and only volume of his Flora of the Northern and Middle States. In the same year he obtained the chair of chemistry and
geology at
West Point military academy, and three years later the professorship of chemistry and botany in the College of Physicians and Surgeons, New York.
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torr
Noun
1. a unit of pressure equal to 0.001316 atmosphere; named after Torricelli
(synonym) millimeter of mercury, mm Hg
(hypernym) pressure unit
torr (m)
n.
torr, unit of pressure equal to 133.32 pascals
Torr
the pressure exerted by 1mm of mercury, Hg. Standard atmospheric pressure is 760 torr.
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