dichloro-comb. form

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

Forms: chiefly before a vowel or h also dichlor-.

Origin: Formed within English, by compounding. Etymons: di- comb. form, chloro- comb. form².

Etymology: < di- comb. form + chloro- comb. form².Formations are found from the first half of the 19th cent.

Chemistry.

†a. Used to form the name of a compound containing chlorine combined with two atoms of another element. Cf. dichloride n. 2. Obsolete.

ΚΠ

1831 T. Thomson Syst. Chem. (ed. 7) II. 838 Dichloro-palladiate of ammonia.

b. Used to form the names of compounds containing two atoms of chlorine substituted for another atom or radical (usually hydrogen), as dichloroacetic acid, dichlorobenzene, dichloroethane, etc.

ΚΠ

1852 Q. Jrnl. Chem. Soc. 4 55 Chloride of dichloronaphthyl.

1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 665 When dichlorhydrin is treated with potash, it gives up a molecule of hydrochloric acid.

1873 H. Watts Fownes's Man. Elem. Chem. (ed. 11) 759 Of dichlorobenzene, two modifications are known.

1917 Color Trade Jrnl. Feb. 88/2 From it [sc. benzidine] are prepared a dichlorobenzidine and a nitrobenzidine, used in the manufacture of Anthracene Red.

1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) ii. 65 Ethylidene chloride, also called ethidene chloride, or 1:1-dichloroethane, is..most conveniently prepared with phosgene.

1949 H. W. C. Vines Green's Man. Pathol. (ed. 17) xii. 314 Mustard gas (Dichlor-ethyl-Sulphide).

1960 F. G. Mann & B. C. Saunders Pract. Org. Chem. (ed. 4) ii. 313 Continue the sulphur dioxide for 1 hour, when the heavy dichloroarsine will have sunk to the bottom.

1990 Y. Doi Microbial Polyesters vi. 103 NMR spectroscopy in solvents such as chloroform, dichloroethane, tetrachloroethane, trifluorethanol, dichloroacetic acid, and dimethylformamide.

2008 New Yorker 21 July 85/1 One of the most popular herbicides was..2,4-dichlorophenoxyacetic acid, or 2, 4-D.

dichlorodifluoromethane n.

Brit.

/dʌɪˌklɔːrə(ʊ)dʌɪˌflʊərə(ʊ)ˈmiːθeɪn/

/dʌɪˌklɔːrə(ʊ)dʌɪˌflɔːrə(ʊ)ˈmiːθeɪn/

U.S.

/daɪˈˌklɔroʊdaɪˌflʊroʊˈmɛˌθeɪn/

/daɪˈˌklɔroʊdaɪˌflɔroʊˈmɛˌθeɪn/

an easily liquefied, unreactive gas used (esp. formerly) as a refrigerant and aerosol propellant.Formula: CCl₂F₂.

ΚΠ

1930 G. W. Jones & G. St J. Perrott (U. S. Bureau Mines) (title) Extinction of methane flames by dichloro-difluoro-methane.

1976 Science 8 Oct. 171/1 Trichlorofluoromethane and dichlorodifluoromethane (CFCl₃ and CF₂Cl₂, the halocarbons implicated in ozone damage).

2006 Akron (Ohio) Beacon Jrnl. (Nexis) 2 Sept. b3 Downwind samples just off the landfill showed levels of the chemicals ranging from acetone at 6.4 parts per billion to dichlorodifluoromethane at 0.55 parts per billion.

This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).

单词	dichloro-
释义	dichloro-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Forms: chiefly before a vowel or h also dichlor-. Origin: Formed within English, by compounding. Etymons: di- comb. form, chloro- comb. form². Etymology: < di- comb. form + chloro- comb. form².Formations are found from the first half of the 19th cent. Chemistry. 1. †a. Used to form the name of a compound containing chlorine combined with two atoms of another element. Cf. dichloride n. 2. Obsolete. ΚΠ 1831 T. Thomson Syst. Chem. (ed. 7) II. 838 Dichloro-palladiate of ammonia. b. Used to form the names of compounds containing two atoms of chlorine substituted for another atom or radical (usually hydrogen), as dichloroacetic acid, dichlorobenzene, dichloroethane, etc. ΚΠ 1852 Q. Jrnl. Chem. Soc. 4 55 Chloride of dichloronaphthyl. 1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 665 When dichlorhydrin is treated with potash, it gives up a molecule of hydrochloric acid. 1873 H. Watts Fownes's Man. Elem. Chem. (ed. 11) 759 Of dichlorobenzene, two modifications are known. 1917 Color Trade Jrnl. Feb. 88/2 From it [sc. benzidine] are prepared a dichlorobenzidine and a nitrobenzidine, used in the manufacture of Anthracene Red. 1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) ii. 65 Ethylidene chloride, also called ethidene chloride, or 1:1-dichloroethane, is..most conveniently prepared with phosgene. 1949 H. W. C. Vines Green's Man. Pathol. (ed. 17) xii. 314 Mustard gas (Dichlor-ethyl-Sulphide). 1960 F. G. Mann & B. C. Saunders Pract. Org. Chem. (ed. 4) ii. 313 Continue the sulphur dioxide for 1 hour, when the heavy dichloroarsine will have sunk to the bottom. 1990 Y. Doi Microbial Polyesters vi. 103 NMR spectroscopy in solvents such as chloroform, dichloroethane, tetrachloroethane, trifluorethanol, dichloroacetic acid, and dimethylformamide. 2008 New Yorker 21 July 85/1 One of the most popular herbicides was..2,4-dichlorophenoxyacetic acid, or 2, 4-D. 2. dichlorodifluoromethane n. Brit. /dʌɪˌklɔːrə(ʊ)dʌɪˌflʊərə(ʊ)ˈmiːθeɪn/ , /dʌɪˌklɔːrə(ʊ)dʌɪˌflɔːrə(ʊ)ˈmiːθeɪn/ , U.S. /daɪˈˌklɔroʊdaɪˌflʊroʊˈmɛˌθeɪn/ , /daɪˈˌklɔroʊdaɪˌflɔroʊˈmɛˌθeɪn/ an easily liquefied, unreactive gas used (esp. formerly) as a refrigerant and aerosol propellant.Formula: CCl₂F₂. ΚΠ 1930 G. W. Jones & G. St J. Perrott (U. S. Bureau Mines) (title) Extinction of methane flames by dichloro-difluoro-methane. 1976 Science 8 Oct. 171/1 Trichlorofluoromethane and dichlorodifluoromethane (CFCl₃ and CF₂Cl₂, the halocarbons implicated in ozone damage). 2006 Akron (Ohio) Beacon Jrnl. (Nexis) 2 Sept. b3 Downwind samples just off the landfill showed levels of the chemicals ranging from acetone at 6.4 parts per billion to dichlorodifluoromethane at 0.55 parts per billion. This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022). < comb. form1831
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