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tar

 [tahr]
a dark brown or black viscid liquid from the wood of various species of pine, or found as a by-product of the destructive distillation of bituminous coal (see coal tar). It is a complex mixture, the source of organic substances such as cresol, creosol, naphthalene, paraffin, phenol, and toluene. Formerly used as an oral medication in treatment of various conditions, it has been found to be toxic and carcinogenic and now has only limited topical use in certain skin diseases.
coal tar a by-product obtained in destructive distillation of bituminous coal; if its fumes are inhaled or if it is ingested in its natural state, it is toxic and carcinogenic. A preparation is used in ointment or solution in treatment of eczema and psoriasis.

TAR

Acronym for thrombocytopenia and absent radius. See: thrombocytopenia-absent radius syndrome.

tar

(tahr),
A thick, semisolid, blackish brown mass, of complex hydrocarbon composition, obtained by destructive distillation of carbonaceous materials. For individual tars, see specific names.

tar

(tär)
n.
1. A dark, oily, viscous material, consisting mainly of hydrocarbons, produced by the destructive distillation of organic substances such as wood, coal, or peat.
2. See coal tar.
3. A solid residue of tobacco smoke containing byproducts of combustion.

TAR

Abbreviation for thrombocytopenia and absent radius.
See: thrombocytopenia-absent radius syndrome
References in periodicals archive ?
The aim of this research is to study the regularities of extraction process of tarry substances of manufacturing sewage of an ammonium sulphate with use of sodium and calcium bentonites, an absorbite and peat, and definition of a specific surface area of the specified adsorbents.
Director Naomi Tarry won the 'East of England Businesswoman Entrepreneur of the Year Award' in 2011, and the business was a finalist in the national British Travel Awards last year.
Mr Tarry lived in the Orford area of Warrington for 10 years, with his mother, who he was the main carer for.
Unlike many of the better known black women writers who are her contemporaries, Tarry uses her autobiography prominently to address the question of the role played by class identification in the construction of her own raced identity.
Since 1998, McCallum and Tarry have collaborated on a number of provocative videos examining political conflict and homelessness, but this intensely personal work, which integrates, as it were, their interracial marriage, is transcendent.
But what for the Geneva and King James translators had been a verb without sexual connotations became in later days nearly synonymous with bundling; "tarry" was defined in eighteenth-century America as "the practice of unmarried couples, partly undressed, occupying the same bed." (86)
They say such organics wouldn't be volatile enough to escape from these so-called tarry meteoroids as they travel near the sun, and they've calculated that heavy organic molecules could theoretically survive thousands of years in space.
However, we can't afford to tarry too long in our celebrations.
However unions have already indicated that they will be meeting to discuss the report, which was produced by Commerzbank aviation analyst Chris Tarry. Unions intending to participate in the discussions include the GMB union, Transport and General Workers Union and the AEEU according to Reuters.
Marco Polo noted the black, tarry stuff that was "good to burn" in the 13th century.
8 as the Abbey's "Tarry Flynn," the Gate's Harold Pinter festival and the Druid's staging of Martin McDonagh's "Leenane" trilogy swept the trophies.
The whole region around Tarry Town (or Sleepy Hollow), the Tappan Zee and neighbouring communities is steeped in Revolutionary War stories.