alkenonen.

Brit.

/ˈalkᵻnəʊn/, U.S.

/ˈælkəˌnoʊn/

Origin: Formed within English, by derivation. Etymons: alkene n., -one suffix.

Etymology: < alkene n. + -one suffix.

Chemistry and Geology.

A ketone containing an unsaturated hydrocarbon group with one or more carbon–carbon double bonds.Many unsaturated long-chain alkenones are produced by certain phytoplankton, and the distribution of alkenones in sediments and their degree of unsaturation have been used as a means of determining past sea temperatures.

ΘΚΠ

the world > matter > chemistry > organic chemistry > ketones > [noun] > others

pyroacetic ether1810

pyroacetic spirit1810

pyroacetic acid1819

margarone1834

oleone1834

stearone1836

acetone1838

valerone1839

benzoin1863

acetophenone1871

anthrone1881

ionone1893

Michler's ketone1897

chalcone1899

butanone1902

butyrophenone1908

alkenone1945

tropolone1945

1945 U.S. Patent 2,383,711 1/1 Our invention relates to preparation of alkenals and alkenones.

1992 Oceanogr. in Next Decade (National Acad. Sci.) iii. 73 The average number of carbon double bonds in alkenones from Quaternary sediments of the northeast tropical Atlantic showed a strong inverse correlation..with the temperature of the near-surface ocean water.

2008 P. Giresse Trop. & Sub-trop. W. Afr. ix. 129/2 In the northern equatorial Atlantic, the alkenone temperature method showed 1.8°C cooling at the last glacial maximum.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).

单词	alkenone
释义	alkenonen. Brit. /ˈalkᵻnəʊn/, U.S. /ˈælkəˌnoʊn/ Origin: Formed within English, by derivation. Etymons: alkene n., -one suffix. Etymology: < alkene n. + -one suffix. Chemistry and Geology. A ketone containing an unsaturated hydrocarbon group with one or more carbon–carbon double bonds.Many unsaturated long-chain alkenones are produced by certain phytoplankton, and the distribution of alkenones in sediments and their degree of unsaturation have been used as a means of determining past sea temperatures. ΘΚΠ the world > matter > chemistry > organic chemistry > ketones > [noun] > others pyroacetic ether1810 pyroacetic spirit1810 pyroacetic acid1819 margarone1834 oleone1834 stearone1836 acetone1838 valerone1839 benzoin1863 acetophenone1871 anthrone1881 ionone1893 Michler's ketone1897 chalcone1899 butanone1902 butyrophenone1908 alkenone1945 tropolone1945 1945 U.S. Patent 2,383,711 1/1 Our invention relates to preparation of alkenals and alkenones. 1992 Oceanogr. in Next Decade (National Acad. Sci.) iii. 73 The average number of carbon double bonds in alkenones from Quaternary sediments of the northeast tropical Atlantic showed a strong inverse correlation..with the temperature of the near-surface ocean water. 2008 P. Giresse Trop. & Sub-trop. W. Afr. ix. 129/2 In the northern equatorial Atlantic, the alkenone temperature method showed 1.8°C cooling at the last glacial maximum. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021). < n.1945
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