undec-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

Forms: before a consonant undeca-.

Origin: A borrowing from Latin. Etymon: classical Latin undecim.

Etymology: < undec- (in classical Latin undecim eleven < ūnus one (see one adj.) + decem ten: see decem- comb. form). Compare hendeca- comb. form.In the form undeca-, remodelled after deca- comb. form. Compare French undéc- , German undec- . The -im of classical Latin -decim (in undecim ) may be after decimus tenth (see decimal adj.).

Combining form of Latin undecim eleven, as in undecagon n.; cf. hendeca- comb. form. In Chemistry and Biochemistry used to form the names of molecules that contain eleven carbon atoms or consist of eleven of the second element.

undecane n.

Brit.

/ʌnˈdɛkeɪn/

U.S.

/ˌənˈdɛˌkeɪn/

/ˈəndəˌkeɪn/

any of a series of isomeric hydrocarbons C₁₁H₂₄, esp. the liquid unbranched member CH₃(CH₂)₉CH₃.

ΘΚΠ

the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkanes > straight-chained by number of carbon atoms > eleven > isomer of

hendecane1889

undecane1899

1899 Jrnl. Chem. Soc. 76 i. 816 The same substances were also detected in neutral creosote from paraffin oil; in this, undecane was found.

1971 E. O. Wilson Insect Societies xii. 237/1 Undecane and the mandibular gland substances..evoke the alarm response at concentrations of 10⁹–10¹² molecules per cubic centimeter.

undecapeptide n.

Brit.

/ˌʌndɛkəˈpɛptʌɪd/

U.S.

/ˌənˌdɛkəˈpɛpˌtaɪd/

any polypeptide composed of eleven amino-acids. [After decapeptide n. at deca- comb. form Additions.]

ΚΠ

1960 Jrnl. Biol. Chem. 235 3645/2 Imidazole-heme undecapeptide exhibits a more complex behavior.

1979 Nature 8 Feb. 480/2 Several lines of evidence suggest that the undecapeptide, substance P, is involved in synaptic transmission in various areas of the central nervous system.

undecylenic acid n.

Brit.

/ˌʌndɛsᵻlɛnɪk ˈasɪd/

/ˌʌndɛsᵻliːnɪk ˈasɪd/

U.S.

/ˌənˌdɛsəˌlɛnɪk ˈæsəd/

/ˌənˌdɛsəˌlinɪk ˈæsəd/

a yellow, water-insoluble carboxylic acid, CH₂: CH(CH₂)₈COOH, which is used as an antifungal agent. [After German Undecylensäure (1878 or earlier); compare French acide undécylénique (1879 or earlier).]

ΘΚΠ

the world > matter > chemistry > organic chemistry > organic acids > [noun] > carboxylic acids > miscellaneous others

urobenzoic acid1836

adipic acid1838

azelaic acid1838

isethionic acid1838

rutinic acid1845

rutic acid1848

glyoxylic acid1856

malonic acid1859

piperic acid1863

butalanine1865

methacrylic acid1865

barbituric acid1866

pichuric acid1866

carboxylic acid1868

gluconic acid1871

xylic acid1872

xylidic acid1872

aconic acid1873

formobenzoic1873

nicotinic acid1873

hydracrylic acid1877

undecylenic acid1879

isonicotinic acid1883

isatoic acid1885

linolenic acid1887

hendecenoic acid1889

heptenoic acid1889

mannonic acid1890

phenolcarboxylic acid1893

naphthenic acid1894

aldonic acid1904

naphthaleneacetic acid1917

heptanoic acid1928

hexuronic acid1928

pantothenic acid1933

neuraminic acid1942

pantoic acid1945

penicillanic acid1953

mevalonic acid1957

retinoic acid1960

isobutyric acid-

1879 Jrnl. Chem. Soc. 36 306 Undecylic acid, C₁₁H₂₂O₂, prepared by heating undecylenic acid with red phosphorus and hydriodic acid.., is a colourless transparent substance.

1952 S. Spender Learning Laughter xiii. 179 Castor oil plants can also be broken down into eneanthol and undecylenic acid.

1979 Jrnl. Pharmaceut. Sci. 68 384/1 The antifungal activity of products containing undecylenic acid and its salts was demonstrated some time ago.

This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022).

单词	undec-
释义	undec-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Forms: before a consonant undeca-. Origin: A borrowing from Latin. Etymon: classical Latin undecim. Etymology: < undec- (in classical Latin undecim eleven < ūnus one (see one adj.) + decem ten: see decem- comb. form). Compare hendeca- comb. form.In the form undeca-, remodelled after deca- comb. form. Compare French undéc- , German undec- . The -im of classical Latin -decim (in undecim ) may be after decimus tenth (see decimal adj.). Combining form of Latin undecim eleven, as in undecagon n.; cf. hendeca- comb. form. In Chemistry and Biochemistry used to form the names of molecules that contain eleven carbon atoms or consist of eleven of the second element. undecane n. Brit. /ʌnˈdɛkeɪn/ , U.S. /ˌənˈdɛˌkeɪn/ , /ˈəndəˌkeɪn/ any of a series of isomeric hydrocarbons C₁₁H₂₄, esp. the liquid unbranched member CH₃(CH₂)₉CH₃. ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkanes > straight-chained by number of carbon atoms > eleven > isomer of hendecane1889 undecane1899 1899 Jrnl. Chem. Soc. 76 i. 816 The same substances were also detected in neutral creosote from paraffin oil; in this, undecane was found. 1971 E. O. Wilson Insect Societies xii. 237/1 Undecane and the mandibular gland substances..evoke the alarm response at concentrations of 10⁹–10¹² molecules per cubic centimeter. undecapeptide n. Brit. /ˌʌndɛkəˈpɛptʌɪd/ , U.S. /ˌənˌdɛkəˈpɛpˌtaɪd/ any polypeptide composed of eleven amino-acids. [After decapeptide n. at deca- comb. form Additions.] ΚΠ 1960 Jrnl. Biol. Chem. 235 3645/2 Imidazole-heme undecapeptide exhibits a more complex behavior. 1979 Nature 8 Feb. 480/2 Several lines of evidence suggest that the undecapeptide, substance P, is involved in synaptic transmission in various areas of the central nervous system. undecylenic acid n. Brit. /ˌʌndɛsᵻlɛnɪk ˈasɪd/ , /ˌʌndɛsᵻliːnɪk ˈasɪd/ , U.S. /ˌənˌdɛsəˌlɛnɪk ˈæsəd/ , /ˌənˌdɛsəˌlinɪk ˈæsəd/ a yellow, water-insoluble carboxylic acid, CH₂: CH(CH₂)₈COOH, which is used as an antifungal agent. [After German Undecylensäure (1878 or earlier); compare French acide undécylénique (1879 or earlier).] ΘΚΠ the world > matter > chemistry > organic chemistry > organic acids > [noun] > carboxylic acids > miscellaneous others urobenzoic acid1836 adipic acid1838 azelaic acid1838 isethionic acid1838 rutinic acid1845 rutic acid1848 glyoxylic acid1856 malonic acid1859 piperic acid1863 butalanine1865 methacrylic acid1865 barbituric acid1866 pichuric acid1866 carboxylic acid1868 gluconic acid1871 xylic acid1872 xylidic acid1872 aconic acid1873 formobenzoic1873 nicotinic acid1873 hydracrylic acid1877 undecylenic acid1879 isonicotinic acid1883 isatoic acid1885 linolenic acid1887 hendecenoic acid1889 heptenoic acid1889 mannonic acid1890 phenolcarboxylic acid1893 naphthenic acid1894 aldonic acid1904 naphthaleneacetic acid1917 heptanoic acid1928 hexuronic acid1928 pantothenic acid1933 neuraminic acid1942 pantoic acid1945 penicillanic acid1953 mevalonic acid1957 retinoic acid1960 isobutyric acid- 1879 Jrnl. Chem. Soc. 36 306 Undecylic acid, C₁₁H₂₂O₂, prepared by heating undecylenic acid with red phosphorus and hydriodic acid.., is a colourless transparent substance. 1952 S. Spender Learning Laughter xiii. 179 Castor oil plants can also be broken down into eneanthol and undecylenic acid. 1979 Jrnl. Pharmaceut. Sci. 68 384/1 The antifungal activity of products containing undecylenic acid and its salts was demonstrated some time ago. This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022). < comb. form1879
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