† metaceticadj.

Origin: A borrowing from French. Etymon: French métacétique.

Etymology: < French métacétique (J. Dumas et al. 1847, in Compt. rendus de l'Acad. des Sci. 25 657) < méta- meta- prefix (compare meta- prefix 4a) + acétique acetic adj. Compare slightly earlier metacetonic adj. N.E.D. (1906) gives the pronunciation (metăsī·tik) /mɛtəˈsiːtɪk/.

Chemistry. Obsolete.

metacetic acid n. = propionic acid n. at propionic adj. 1a.

ΚΠ

1850 Philos. Trans. (Royal Soc.) 140 127 Substances of the formula C₁₈H₁₃N will also be obtained..by fixing upon aniline the radical (propyl) belonging to the missing alcohol of propionic acid (metacetic acid).

1850 Pharm. Jrnl. & Trans. 10 85 Preparation of Metacetic Acid.

1852 W. Gregory Handbk. Org. Chem. (ed. 3) 228 It [sc. propione] was formerly called metacetone, and hence propylic acid was called metacetic acid.

1854 R. D. Thomson Cycl. Chem. (at cited word) Metacetic Acid. Metacetonic acid. A synonyme of Propionic acid.

1872 Harper's Mag. Jan. 310/1 The acid and non-basic products formed are, formic, acetic, metacetic, butyric, valeric, and carbolic acids.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2019).

单词	metacetic
释义	† metaceticadj. Origin: A borrowing from French. Etymon: French métacétique. Etymology: < French métacétique (J. Dumas et al. 1847, in Compt. rendus de l'Acad. des Sci. 25 657) < méta- meta- prefix (compare meta- prefix 4a) + acétique acetic adj. Compare slightly earlier metacetonic adj. N.E.D. (1906) gives the pronunciation (metăsī·tik) /mɛtəˈsiːtɪk/. Chemistry. Obsolete. metacetic acid n. = propionic acid n. at propionic adj. 1a. ΚΠ 1850 Philos. Trans. (Royal Soc.) 140 127 Substances of the formula C₁₈H₁₃N will also be obtained..by fixing upon aniline the radical (propyl) belonging to the missing alcohol of propionic acid (metacetic acid). 1850 Pharm. Jrnl. & Trans. 10 85 Preparation of Metacetic Acid. 1852 W. Gregory Handbk. Org. Chem. (ed. 3) 228 It [sc. propione] was formerly called metacetone, and hence propylic acid was called metacetic acid. 1854 R. D. Thomson Cycl. Chem. (at cited word) Metacetic Acid. Metacetonic acid. A synonyme of Propionic acid. 1872 Harper's Mag. Jan. 310/1 The acid and non-basic products formed are, formic, acetic, metacetic, butyric, valeric, and carbolic acids. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2019). < adj.1850
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