| PT | pain threshold; parathormone; parathyroid; paroxysmal tachycardia; part time; patient; pericardial t... |
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| TAR | thoracic aortic rupture; thrombocytopenia with absent radii [syndrome]; tissue-air ratio; total abor... |
| TAR/PD | target nursing hours per patient/day |
| T/N | tar and nicotine |
| tar acne | An occupational acne-like eruption due to prolonged contact with certain chlorinated compounds (naphthalenes and diphenyls); keratinous plugs (comedones) form in the pilosebaceous orifices, and variously sized small papules (2 to 4 mm) develop. Synonym: chlorine acne, tar acne. (05 Mar 2000) |
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| tar camphor | <chemistry> A white crystalline aromatic hydrocarbon, C10H8, analogous to benzene, and obtained by the distillation of certain bituminous materials, such as the heavy oil of coal tar. It is the type and basis of a large number of derivatives among organic compounds. Formerly called also naphthaline. <chemistry> Naphthalene red, a yellow dyestuff obtained from certain nitro derivatives of naphthol. Source: Websters Dictionary (01 Mar 1998) |
| tar keratosis | Warty lesions of the face and hands resulting from repeated, prolonged exposure to tar and pitch; also occurs as keratoacanthoma-like lesions that can become malignant, particularly on the scrotum. (05 Mar 2000) |
| tar syndrome | <syndrome> Tar stands for thrombocytopenia (low blood platelets) and aplasia (absence) of the radius (the long bone on the thumb-side of the forearm), features characterizing this syndrome. There is phocomelia (flipper-limb) with the thumbs always present. The fibula (the smaller bone in the lower leg) is often absent. The risk of bleeding from too few platelets is high in early infancy but lessens with age. The condition is inherited in an autosomal recessive trait with one gene (on a non-sex chromosome) coming from each parent to the tar child. Alternative names include thrombocytopenia-absent radius syndrome, radial aplasia-thrombocytopenia syndrome, and tetraphocomelia-thrombocytopenia syndrome. (12 Dec 1998) |
| tar-water | A cold infusion of tar in water, formerly regarded as a cure-all. (webster, 3d ed) (12 Dec 1998) |
| juniper tar | The empyreumatic volatile oil obtained from the woody portion of Juniperus oxycedrus; used externally for skin diseases. Synonym: cade oil. (05 Mar 2000) |