orsellinicadj.

Brit.

/ˌɔːsəˈlɪnɪk/, U.S.

/ˌɔrsəˈlɪnɪk/

Origin: Probably a borrowing from German, combined with an English element. Etymons: German Orsellinsäure , -ic suffix.

Etymology: Probably < orsellin- (in German Orsellinsäure orsellic acid; 1848 in the German translation of quot. 1848¹ for orsellic acid n. at orsellic adj.; perhaps < orchil n. (see variants at that entry) + German -in -ine suffix⁵) + -ic suffix. With the relationship between orsellic adj. and orsellinic adj. compare maleinic adj. beside maleic adj.

Chemistry.

1. orsellinic acid n. a crystalline phenolic acid found in some lichens and fungi, chiefly in the form of depsides such as lecanoric acid; 2,4-dihydroxy-6-methylbenzoic acid, C₈H₈O₄.

ΘΚΠ

the world > matter > chemistry > organic chemistry > crystalline substances > [noun] > orsellesic acid

orsellinic acid1852

1852 H. B. Jones & A. W. Hoffman Fownes's Man. Elem. Chem. (ed. 4) III. 476 Boiled with water for some time, erythric acid absorbs 2 eq. and yields picro-erythrin..and a new acid..which is termed by some chemists lecanoric, by others orsellinic acid.

1873 H. Watts Fownes's Man. Elem. Chem. (ed. 11) 805 Orsellinic acid, when boiled with baryta-water, splits up into carbon dioxide and orcin.

1931 Philos. Trans. (Royal Soc.) B. 220 299 In searching for a diagnostic reaction, we were greatly assisted by having in our possession pure specimens of the dimethyl ethers of orsellinic acid..and of para-orsellinic acid.

1967 M. E. Hale Biol. Lichens viii. 105 The presumptious precursors of depsides and depsidones such as orsellinic acid and sparassol..do not accumulate.

2002 Jrnl. Hattori Bot. Lab. No. 92. 245 Entrapped or adsorbed cells can be used to induce a particular metabolic transformation, i.e., lecanoric acid into orsellinic acid, or, alternatively, to produce lichen phenolics from acetate as a primary precursor.

†2. orsellinic ether n. Obsolete an ether derived from orsellinic acid.

ΚΠ

1862 Proc. Royal Soc. 12 263 On drying and boiling the erythrin with strong alcohol, he [sc. Hesse] produced the ether which he terms orsellinic ether.

1866 H. Watts Dict. Chem. IV. 641 Picroerythrin (C₁₂H₁₆O₇), a body produced, together with orsellinic ether, by the action of boiling water on erythrin.

This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).

单词	orsellinic
释义	orsellinicadj. Brit. /ˌɔːsəˈlɪnɪk/, U.S. /ˌɔrsəˈlɪnɪk/ Origin: Probably a borrowing from German, combined with an English element. Etymons: German Orsellinsäure , -ic suffix. Etymology: Probably < orsellin- (in German Orsellinsäure orsellic acid; 1848 in the German translation of quot. 1848¹ for orsellic acid n. at orsellic adj.; perhaps < orchil n. (see variants at that entry) + German -in -ine suffix⁵) + -ic suffix. With the relationship between orsellic adj. and orsellinic adj. compare maleinic adj. beside maleic adj. Chemistry. 1. orsellinic acid n. a crystalline phenolic acid found in some lichens and fungi, chiefly in the form of depsides such as lecanoric acid; 2,4-dihydroxy-6-methylbenzoic acid, C₈H₈O₄. ΘΚΠ the world > matter > chemistry > organic chemistry > crystalline substances > [noun] > orsellesic acid orsellinic acid1852 1852 H. B. Jones & A. W. Hoffman Fownes's Man. Elem. Chem. (ed. 4) III. 476 Boiled with water for some time, erythric acid absorbs 2 eq. and yields picro-erythrin..and a new acid..which is termed by some chemists lecanoric, by others orsellinic acid. 1873 H. Watts Fownes's Man. Elem. Chem. (ed. 11) 805 Orsellinic acid, when boiled with baryta-water, splits up into carbon dioxide and orcin. 1931 Philos. Trans. (Royal Soc.) B. 220 299 In searching for a diagnostic reaction, we were greatly assisted by having in our possession pure specimens of the dimethyl ethers of orsellinic acid..and of para-orsellinic acid. 1967 M. E. Hale Biol. Lichens viii. 105 The presumptious precursors of depsides and depsidones such as orsellinic acid and sparassol..do not accumulate. 2002 Jrnl. Hattori Bot. Lab. No. 92. 245 Entrapped or adsorbed cells can be used to induce a particular metabolic transformation, i.e., lecanoric acid into orsellinic acid, or, alternatively, to produce lichen phenolics from acetate as a primary precursor. †2. orsellinic ether n. Obsolete an ether derived from orsellinic acid. ΚΠ 1862 Proc. Royal Soc. 12 263 On drying and boiling the erythrin with strong alcohol, he [sc. Hesse] produced the ether which he terms orsellinic ether. 1866 H. Watts Dict. Chem. IV. 641 Picroerythrin (C₁₂H₁₆O₇), a body produced, together with orsellinic ether, by the action of boiling water on erythrin. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022). < adj.1852
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