coal tar

coal tar
noun
a tar formed from distillation of bituminous coal; coal tar can be further distilled to give various aromatic compounds
• Hypernyms: ↑pitch, ↑tar
• Substance Meronyms: ↑naphthalene

* * *

noun
: tar obtained by the destructive distillation of bituminous coal usually in coke ovens or retorts and consisting of numerous constituents (as benzene, xylenes, naphthalene, pyridine, quinoline, phenol, cresols, light oil, creosote) that may be obtained by distillation

* * *

—coal-tar, adj.
a thick, black, viscid liquid formed during the distillation of coal, that upon further distillation yields compounds, as benzene, anthracene, and phenol, from which are derived a large number of dyes, drugs, and other synthetic compounds, and that yields a final residuum (coal-tar pitch), which is used chiefly in making pavements.
[1775-85]

* * *

coal tar noun
A thick, black, opaque liquid formed when coal is distilled
• • •
Main Entry: ↑coal

* * *

coal tar,
a black, sticky substance left after bituminous coal has been distilled to make coal gas. Coal tar is used to make roofing and paving materials. Aniline dyes, flavorings, perfumes, benzene, paraffin, naphtha, and many other products contain substances made from coal tar. »

From coal tars came a series of compounds, called aromatic because of their pungent odor, whose structure took the form of ring-shaped molecules (Scientific American).

* * *

n. a thick black liquid produced by the destructive distillation of bituminous coal. It contains benzene, naphthalene, phenols, aniline, and many other organic chemicals

* * *

noun [noncount]
: a black, sticky liquid made from coal that is used as a fuel and to make various products (such as soap)

* * *

ˈcoal tar [coal tar] noun uncountable
a thick black sticky substance produced when gas is made from coal

•

the powerful smell of coal tar soap


Useful english dictionary. 2012.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Coal tar — is a brown or black liquid of extremely high viscosity, which smells of naphthalene and aromatic hydrocarbons. Coal tar is among the by products when coal is carbonized to make coke or gasified to make coal gas. Coal tars are complex and variable …   Wikipedia

  • coal tar — coal tar, adj. a thick, black, viscid liquid formed during the distillation of coal, that upon further distillation yields compounds, as benzene, anthracene, and phenol, from which are derived a large number of dyes, drugs, and other synthetic… …   Universalium

  • Coal tar — Tar Tar, n. [OE. terre, tarre, AS. teru, teoru; akin to D. teer, G. teer, theer, Icel. tjara, Sw. tj[ a]ra, Dan. ti[ae]re, and to E. tree. [root]63. See {Tree}.] A thick, black, viscous liquid obtained by the distillation of wood, coal, etc., and …   The Collaborative International Dictionary of English

  • Coal tar — Coal Coal (k[=o]l), n. [AS. col; akin to D. kool, OHG. chol, cholo, G. kohle, Icel. kol, pl., Sw. kol, Dan. kul; cf. Skr. jval to burn. Cf. {Kiln}, {Collier}.] 1. A thoroughly charred, and extinguished or still ignited, fragment from wood or… …   The Collaborative International Dictionary of English

  • Coal tar — A thick, black, tarry liquid, obtained by the distillation of bituminous coal in the manufacture of illuminating gas; used for making printer s ink, black varnish, etc. It is a complex mixture from which many substances have been obtained,… …   The Collaborative International Dictionary of English

  • coal tar — n [U] a thick black sticky liquid made by heating coal without air, from which many drugs and chemical products are made ▪ coal tar soap …   Dictionary of contemporary English

  • coal tar — coal′ tar n. chem. a viscid black liquid obtained by distillation of coal, used in making dyes, drugs, and other synthetic compounds • Etymology: 1775–85 coal′ tar , adj …   From formal English to slang

  • coal tar — ► NOUN ▪ a thick black liquid distilled from coal, containing organic chemicals including benzene, naphthalene, phenols, and aniline …   English terms dictionary

  • coal tar — n. a black, thick, opaque liquid obtained by the destructive distillation of bituminous coal, used in making dyes, medicines, plastics, paints, etc …   English World dictionary

  • coal tar — A by product obtained during the destructive distillation of bituminous coal; a very dark semisolid of characteristic naphthalenelike odor and a sharp, burning taste; used in the treatment of skin diseases. * * * coal tar kōl n tar obtained by… …   Medical dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”