| TH, Th, | Th T-helper [lymphocyte]; thenar; therapist; therapy; thoracic, thorax; thorium; throat |
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| RE | radium emanation; readmission; rectal examination; reference emitter; reflux esophagitis; regional e... |
| stat | immediately [Lat. statim]; radiation emanation unit [German] |
| emanation | 1. Any substance that flows out or is emitted from a source or origin. 2. The radiation from a radioactive element. Origin: L. E-mano, pp. -atus, to flow out Actinium emanation, radon-219. Radium emanation, radon-222. Thorium emanation, radon-220. See: emanon. (05 Mar 2000) |
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| thorium | <chemistry> A metallic element found in certain rare minerals, as thorite, pyrochlore, monazite, etc, and isolated as an infusible gray metallic powder which burns in the air and forms thoria; formerly called also thorinum. Symbol Th. Atomic weight 232.0. Origin: NL. See Thorite. Source: Websters Dictionary (01 Mar 1998) |
| thorium compounds | Inorganic compounds that contain thorium as an integral part of the molecule. (12 Dec 1998) |
| thorium dioxide | <chemical> Thorium oxide (tho2). A radiographic contrast agent that was used in the early 1930s through about 1954. High rates of mortality have been linked to its use and it has been shown to cause liver cancer. Pharmacological action: carcinogens. Chemical name: Thorium oxide (ThO2) (12 Dec 1998) |
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