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phenoxyacetic acid
phenoxyacetic adj. 
/fᵻˌnɒksɪəˈsɛtɪk/, /fɛˌnɒksɪəˈsiːtɪk/, /fɛˌnɒksɪəˈsɛtɪk/, /fɛˌnɑksiəˈsidɪk/ (also †phenoxacetic) phenoxyacetic acid, a colourless, crystalline, solid acid, C6H5OCH2COOH; a substituted derivative of this, esp. any of various chlorinated derivatives used as herbicides.
Brit. /fᵻˌnɒksɪəˈsiːtɪk/
, /fᵻˌnɒksɪəˈsiːtɪk//fᵻˌnɒksɪəˈsɛtɪk//fɛˌnɒksɪəˈsiːtɪk//fɛˌnɒksɪəˈsɛtɪk/U.S. /fəˌnɑksiəˈsidɪk/
, /fəˌnɑksiəˈsidɪk//fɛˌnɑksiəˈsidɪk/ΘΚΠ
the world > matter > chemistry > organic chemistry > ether > [noun] > derivatives
phenoxyacetic acid1879
Tween1941
1879 Jrnl. Chem. Soc. 36 322 The author [sc. P. Fritzsche]..has undertaken the investigation of oxyphenylacetic acid,..which was discovered and described by Heintz.., and named by him phenoxacetic acid.
1880 Jrnl. Chem. Soc. 38 318 The preparation of phenoxyacetic acid is described at length.
1946 H. C. Long & W. E. Brenchley Suppression of Weeds (ed. 2) xiii. 62 As a result of the work carried out..at Jealott's Hill Research Station a range of phenoxyacetic acid products were discovered, of which Methoxone (4-chlor-2-methylphenoxyacetic acid) was finally chosen.
1959 Jrnl. Exper. Bot. 10 33 (heading) Factors controlling the uptake of phenoxyacetic acids by Lemna minor.
1993 Jrnl. Chromatogr. 643 331/1 To increase their effect, phenoxyacetic acids are frequently used in combination with other herbicides.
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