roccellicadj.

Brit.

/rɒkˈsɛlɪk/, U.S.

/ˌrɑkˈsɛlɪk/

Origin: A borrowing from Latin, combined with an English element; perhaps modelled on a French lexical item, or perhaps modelled on a German lexical item. Etymons: Latin Roccella , -ic suffix.

Etymology: < scientific Latin Roccella, genus name (A. P. de Candolle 1805, in Lamarck & A. P. de Candolle Flore française II. 334; < post-classical Latin roccella (1623 or earlier); further etymology uncertain: perhaps related to the Romance nouns cited at orchil n., and if so, apparently showing metathesis; compare Italian roccella (a1823)) + -ic suffix, after French roccellique (1831 or earlier in acide roccellique roccellic acid) or its model German Roccell- (in Roccellsäure roccellic acid: F. Heeren 1830, in Jrnl. f. Chem. u. Physik 59 346).

Chemistry.

1. roccellic acid n. a crystalline carboxylic acid related to succinic acid, and found in certain lichens of genera that include Roccella and Lecanora.Systematic name: (2R,3S)-2-dodecyl-3-methylbutanedioic acid; C₁₇H₃₂O₄.

ΘΚΠ

the world > matter > chemistry > organic chemistry > acids obtained from plants or trees > [noun] > miscellaneous others

rheumic acid1816

arabic acida1836

rubiacic acid1835

aspartic acid1836

sylvic acid1836

tannic acid1836

oenanthic acid1837

gummic acid1838

retinic acid1838

roccellic acid1838

rubinic acid1838

lobelic acid1840

polychromatic acid1840

rhabarbaric acid1840

roccelline1840

humic1844

sumbulolic acid1844

isatic acid1845

opianic acid1845

parthenic acid1845

polychromic acid1847

styphnic acid1848

metapectic acid1849

tanningenic acid1852

jalapic acid1853

jalapinolic acid1855

sinapic acid1857

amalic acid1863

phycic acid1864

filicic acid1865

isamic acid1865

tannocaffeic acidc1865

tricarballylic acid1865

guaiaretic acid1866

pectous acid1866

phytomelin1866

porphyric acid1866

thujetic acid1868

turpetholic acid1868

viridic acid1868

rheotannic acid1869

arabinic acid1870

frangulic1872

sclerotic acid1876

theobromic acid1878

gynocardic acid1897

chaulmoogric acid1904

1838 T. Thomson Chem. Org. Bodies 128 Of roccellic acid. This acid was discovered by Dr. Heeren in the Rocella tinctoria.

1884 H. E. Roscoe & C. Schorlemmer Treat. Chem. III. ii. 289 Roccellic acid is insoluble in boiling water, but dissolves very easily in alcohol and ether.

1946 Thorpe's Dict. Appl. Chem. (ed. 4) VII. 287/2 Roccellic Acid..is found in several lichens of different types.

1998 Lichenologist 30 21 It is close to other Fellhanera species,..but it differs in the paler soredia, smaller, 1-septate and constricted ascospores and the presence of roccellic acid.

2. roccellic anhydride n. rare the anhydride of roccellic acid, an oily liquid obtained by heating the acid.Formula: C₁₇H₃₀O₃.

ΚΠ

1864 H. Watts tr. L. Gmelin Hand-bk. Chem. XVI. 477 (heading) Roccellic anhydride.

1975 Jrnl. Chem. Soc.: Perkin Trans. 1 847/1 Natural roccellic acid was heated under reflux with an excess of acetyl chloride for 3 h. Evaporation and distillation of the residue gave roccellic anhydride.

This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).

单词	roccellic
释义	roccellicadj. Brit. /rɒkˈsɛlɪk/, U.S. /ˌrɑkˈsɛlɪk/ Origin: A borrowing from Latin, combined with an English element; perhaps modelled on a French lexical item, or perhaps modelled on a German lexical item. Etymons: Latin Roccella , -ic suffix. Etymology: < scientific Latin Roccella, genus name (A. P. de Candolle 1805, in Lamarck & A. P. de Candolle Flore française II. 334; < post-classical Latin roccella (1623 or earlier); further etymology uncertain: perhaps related to the Romance nouns cited at orchil n., and if so, apparently showing metathesis; compare Italian roccella (a1823)) + -ic suffix, after French roccellique (1831 or earlier in acide roccellique roccellic acid) or its model German Roccell- (in Roccellsäure roccellic acid: F. Heeren 1830, in Jrnl. f. Chem. u. Physik 59 346). Chemistry. 1. roccellic acid n. a crystalline carboxylic acid related to succinic acid, and found in certain lichens of genera that include Roccella and Lecanora.Systematic name: (2R,3S)-2-dodecyl-3-methylbutanedioic acid; C₁₇H₃₂O₄. ΘΚΠ the world > matter > chemistry > organic chemistry > acids obtained from plants or trees > [noun] > miscellaneous others rheumic acid1816 arabic acida1836 rubiacic acid1835 aspartic acid1836 sylvic acid1836 tannic acid1836 oenanthic acid1837 gummic acid1838 retinic acid1838 roccellic acid1838 rubinic acid1838 lobelic acid1840 polychromatic acid1840 rhabarbaric acid1840 roccelline1840 humic1844 sumbulolic acid1844 isatic acid1845 opianic acid1845 parthenic acid1845 polychromic acid1847 styphnic acid1848 metapectic acid1849 tanningenic acid1852 jalapic acid1853 jalapinolic acid1855 sinapic acid1857 amalic acid1863 phycic acid1864 filicic acid1865 isamic acid1865 tannocaffeic acidc1865 tricarballylic acid1865 guaiaretic acid1866 pectous acid1866 phytomelin1866 porphyric acid1866 thujetic acid1868 turpetholic acid1868 viridic acid1868 rheotannic acid1869 arabinic acid1870 frangulic1872 sclerotic acid1876 theobromic acid1878 gynocardic acid1897 chaulmoogric acid1904 1838 T. Thomson Chem. Org. Bodies 128 Of roccellic acid. This acid was discovered by Dr. Heeren in the Rocella tinctoria. 1884 H. E. Roscoe & C. Schorlemmer Treat. Chem. III. ii. 289 Roccellic acid is insoluble in boiling water, but dissolves very easily in alcohol and ether. 1946 Thorpe's Dict. Appl. Chem. (ed. 4) VII. 287/2 Roccellic Acid..is found in several lichens of different types. 1998 Lichenologist 30 21 It is close to other Fellhanera species,..but it differs in the paler soredia, smaller, 1-septate and constricted ascospores and the presence of roccellic acid. 2. roccellic anhydride n. rare the anhydride of roccellic acid, an oily liquid obtained by heating the acid.Formula: C₁₇H₃₀O₃. ΚΠ 1864 H. Watts tr. L. Gmelin Hand-bk. Chem. XVI. 477 (heading) Roccellic anhydride. 1975 Jrnl. Chem. Soc.: Perkin Trans. 1 847/1 Natural roccellic acid was heated under reflux with an excess of acetyl chloride for 3 h. Evaporation and distillation of the residue gave roccellic anhydride. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < adj.1838
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