meta-compoundn.
/ˈmɛtəˌkɒmpaʊnd/, U.S. /ˈmɛdəˌkɑmpaʊnd/ Chemistry.† 1. A compound that is or is derived from a meta-acid. See meta- prefix 4a. Obsolete. rare.
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1861 W. Odling Man. Chem. Contents p. xiii Phosphorus and Oxygen...Meta-compounds.
2. The meta isomer of a series of disubstituted benzene derivatives.
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1876 Jrnl. Chem. Soc. 1 215 The para- and meta-compounds were also obtained from the corresponding iodanilines.
1905 Brit. Med. Jrnl. 27 May 1144 They [sc. benzenoid ortho- and para- compounds] both differ markedly from their isomerides of the meta-series... In the meta-compound these groups are in apothetic positions with respect to each other.
1910 Encycl. Brit. I. 858/1 The three classes of diamines may be distinguished by their behaviour towards nitrous acid. The ortho-compounds condense to azimido benzenes, the meta-compounds yield azo-dyestuffs, and the para-compounds yield bis-diazo compounds.
1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) xvii. 354 With di-substituted derivatives three isomerides are theoretically possible, viz...the 1:2 or ortho-compound, 1:3 or meta-compound, and the 1:4 or para-compound.
1994 Food Chem. 51 405 The sweet meta-compounds.
1999 Chem. Physics Lett. 299 275/2 Hydrogen bonding is different in the meta compound from that in the ortho and para compounds.
This is a new entry (OED Third Edition, December 2001; most recently modified version published online March 2022).
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