| airborne radioactivity | <radiobiology> Radioactivity in any chemical or physical form that is dissolved, mixed, suspended or otherwise entrained in air. (16 Dec 1997) |
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| radioactivity | <radiobiology> The quality of emitting or the emission of corpuscular or electromagnetic radiations consequent to nuclear disintegration, a natural property of all chemical elements of atomic number above 83 and possible of induction in all other known elements. (18 Nov 1997) |
| induced radioactivity | artificial radioactivity |
| unit of radioactivity | See: Becquerel. (05 Mar 2000) |
| residual | Remaining or left behind. Origin: L. Residuus (18 Nov 1997) |
| residual abscess | An abscess recurring at the site of a former abscess resulting from persistence of microbes and pus. (05 Mar 2000) |
| residual affinity | Secondary forces that enable apparently saturated atoms, ions, or molecules to attract other atoms or groups, causing such phenomena as complex formation, hydration, adsorption, etc. (05 Mar 2000) |
| residual air | The volume of air remaining in the lungs at the end of a maximal expiration. Common abbreviation is rv. (12 Dec 1998) |
| residual body | 1. <cell biology> Secondary lysosomes containing material that cannot be digested. 2. <biology> The surplus cytoplasm shed by spermatids during their differentiation to spermatozoa. Usually the cytoplasm from several spermatids connected by cytoplasmic bridges. 3. <microbiology> Surplus cytoplasm containing pigment and left over after production of merozoites during schizogony of malaria parasites. (18 Nov 1997) |
| residual body of Regaud | The excess cytoplasm that separates from the spermatozoon during spermiogenesis. (05 Mar 2000) |
| residual capacity | The volume of air remaining in the lungs at the end of a maximal expiration. Common abbreviation is rv. (12 Dec 1998) |
| residual cleft | The remnants of the pituitary diverticulum that occur between the pars distalis and pars intermedia; a distinct lumen is present in some animals, but, in humans, is present only during prenatal development and sometimes in young children. Synonym: residual lumen. (05 Mar 2000) |
| residual cyst | The persistence of an apical periodontal cyst that remains after tooth extraction. (05 Mar 2000) |
| residual error | The estimated discrepancy between the actual measured datum and the value for that value computed after a model has been fitted to the set of the data by an estimator. (05 Mar 2000) |
| residual inhibition | The inhibition or suppression of tinnitus by use of a sound-generating device (residual inhibitor) which masks the sounds of tinnitus and produces a residual sound-inhibiting effect when the device is turned off. (05 Mar 2000) |