What's the difference between tan and tar?

Tan


Definition:

  • (a.) Of the color of tan; yellowish-brown.
  • (n.) See Picul.
  • (n.) The bark of the oak, and some other trees, bruised and broken by a mill, for tanning hides; -- so called both before and after it has been used. Called also tan bark.
  • (n.) A yellowish-brown color, like that of tan.
  • (n.) A brown color imparted to the skin by exposure to the sun; as, hands covered with tan.
  • (n.) To convert (the skin of an animal) into leather, as by usual process of steeping it in an infusion of oak or some other bark, whereby it is impregnated with tannin, or tannic acid (which exists in several species of bark), and is thus rendered firm, durable, and in some degree impervious to water.
  • (n.) To make brown; to imbrown, as by exposure to the rays of the sun; as, to tan the skin.
  • (v. i.) To get or become tanned.

Example Sentences:

  • (1) Outdoor sunlight exposure during the workshift and tanning salon use were identified as risk factors; the most severe cutaneous reactions tended to occur among tanning salon users.
  • (2) In t(7;9)(q34;q34.3) translocations from three cases of T-ALL, the breakpoints occur within 100 bp of an intron in TAN-1, resulting in truncation of TAN-1 transcripts.
  • (3) Kidneys were approximately double the normal size and were pale tan to grey in color.
  • (4) Both internalized and cellularly enveloped hexamethylenediisocyanate-tanned dermal sheep collagen degraded by the detachment of fibrils.
  • (5) This demonstrates that a UVA tan provides photoprotection against acute UVA exposure.
  • (6) In this study the efficacy of preserving microvascular heterografts with glutaraldehyde tanning was investigated.
  • (7) A comparative study of tanned cell hemagglutination (TCH) and counterimmunoelectrophoresis (CIE), two easy and reliable methodes for the routine detection of antibodies against nuclear antigens was performed.
  • (8) Mackay confirmed following Saturday's 2-1 defeat by Newcastle United that a resolution had been reached over the issue but Cardiff's players are reportedly no longer happy for Tan to be in the dressing room on match days.
  • (9) Reversible binding of BAN and TAN had Ki values of 1 x 10(-9) and 1 x 10(-10) M, respectively as determined by log probit plots.
  • (10) These findings are relevant to the risk-benefit analysis of sunscreen preparations, especially in skin type II, as they provide evidence that a 5-methoxypsoralen-induced tan is protective against the DNA-damaging effects of solar UV radiation, and thus has the potential to reduce the carcinogenic risk of exposure to such radiation.
  • (11) Modified human umbilical vein allografts tanned with glutaraldehyde and encased in a polyester mesh were used as arterial substitutes in 13 femoropopliteal reconstructive procedures.
  • (12) Patients with polymorphic light eruption who intend to obtain a tan by sunbathing should not, therefore, be treated with sunscreens which may worsen their rash, but should be advised to sunbathe without sunscreens for a shorter time.
  • (13) At higher concentrations, O2 and TAN sensitize the fast-stage damage by a fixation reaction that competes with its repair; in contrast, misonidazole appears mainly to operate by reaction with an earlier, ever shorter form of oxygen-dependent damage.
  • (14) I asked if they had a black baby face, and my mother even asked if they had a “tan” baby (since my husband is white and our child will be biracial), but the sales woman told me that their babies only came in black and white.
  • (15) The potency and selectivity of D,L-4-(3,4-dichloro-benzoyl-amino)-5-(dipentyl-amino)-5-oxo-pen tan oic acid (CR 1409) as a cholecystokinin (CCK) antagonist was investigated on motor responses of the longitudinal and circular muscles of the guinea-pig isolated ileum.
  • (16) This article examines the indoor tanning industry, the effects of ultraviolet-A radiation, and public education.
  • (17) The foal with acute disease had distinct green-tan focal necrosis and thickened mucosa of the large intestine.
  • (18) The carcinogenic effect of 3 commercially available ultraviolet A (UVA) tanning sources was studied in lightly pigmented hairless mice.
  • (19) All tumors occurred as solitary, soft to firm, solid, tan, and ulcerated masses in the digits of dogs aged 11 to 15 years.
  • (20) Anti-hTG titers far below those detected by the tanned-red cell hemagglutination test had very large effects, to the point where measurements of hTG could not be made, when a cross-reactive precipitating antiserum was used.

Tar


Definition:

  • (n.) A sailor; a seaman.
  • (n.) A thick, black, viscous liquid obtained by the distillation of wood, coal, etc., and having a varied composition according to the temperature and material employed in obtaining it.
  • (v. t.) To smear with tar, or as with tar; as, to tar ropes; to tar cloth.

Example Sentences:

  • (1) With the exception of PMMA and PTFE, all plastics leave a very heavy tar- and soot deposit after burning.
  • (2) Utilizing the bilateral comparison technique in 30 hospitalized patients with chronic stable plaque-type psoriasis vulgaris, we closely monitored the clinical responses to ultraviolet radiation (Westinghouse fluorescent FS40 bulbs, 290--400 nm) and a variety of tar preparations and lubricant vehicles in combination and separately.
  • (3) It seems that the addition of liquid tar elevates the reaction threshold to dithranol in hypersensitive patients with psoriasis.
  • (4) We now present evidence that such a decrease in amounts of P68 could be essential for HIV-1 replication because of the presence of the Tat-responsive sequence (TAR sequence) present in the 5' untranslated region of HIV-1 mRNAs, which activates the P68 kinase.
  • (5) We conclude that there appears to be no benefit from exceeding a concentration of 5% crude coal tar in yellow soft paraffin in the treatment of patients with psoriasis and that the plateau in the dose-response curve for the action of crude coal tar in psoriasis begins at a point between 1 and 5%.
  • (6) Purified tat binds specifically to HIV-1 trans-activation-responsive region (TAR) RNA in gel-retardation, filter-binding, and immunoprecipitation assays.
  • (7) benj67 asks: How do you continue to justify continued your role in financing the Canadian tar sands, arguably a greater crime than the Libor scandal?
  • (8) Hansen has been an outspoken critic of tar sands, saying last year "it will be game over for the climate if development of the oil sands isn't stopped".
  • (9) In contrast, erythroid and myeloid colony growth from the TAR infant's marrow cells was preserved.
  • (10) Finally, by 6 min of heavy exercise at 8 mph 20% grade, Tar increased 2 degrees C (P less than 0.05) while Tre increased 0.5 degree C (P less than 0.05).
  • (11) Hydroxylamine mutagenesis was used to alter the tar gene that encodes the transmembrane Tar protein required for chemotaxis.
  • (12) A previously described smoking apparatus (20) was used for measurement of puff volume and inhaled tar.
  • (13) Again, tat protected TAR RNA from RNase A cleavage at both U23 and U31.
  • (14) Since its 2013 announcement, a key aim of TTIP has been to destroy regulations that prevent high-polluting tar sand crude oil from entering Europe.
  • (15) TARS-1 and TART-1 but not TARL-2 were transplantable into newborn syngeneic rats and nude mice.
  • (16) Both the occupational and in particular the therapeutic exposure to coal tar resulted in clear increases in urinary levels of PAH metabolites as compared to unexposed subjects.
  • (17) During the remission period the patients were advised to use a tar preparation or topical corticosteroids in the event of minor exacerbations.
  • (18) Biological studies have demonstrated that concentrated extract of tars from combustion of shale oil are carcingenic to the skin of mice.
  • (19) Beech tar, in a concentration of 5% induced a 19% increase in orthokeratosis.
  • (20) For the study reported in the present investigation these data have been augmented by estimates of past workplace exposure to total tar (benzene-soluble matter) and to benzo-a-pyrene (BaP).

Words possibly related to "tan"

Words possibly related to "tar"