| cough | <clinical sign> A rapid expulsion of air from the lungs typically in order to clear the lung airways of fluids, mucus, or material. (12 Dec 1998) |
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| cough fracture | <orthopaedics> A fracture of a rib or cartilage, usually the fifth or seventh, from vigorous coughing. (05 Mar 2000) |
| cough reflex | <chest medicine, neurology, physiology> The reflex which mediates coughing in response to irritation of the larynx or tracheobronchial tree. Synonym: laryngeal reflex. (05 Mar 2000) |
| cough suppressant | <pharmacology> A medication which acts to suppress the cough reflex. Examples include codeine and dextromethorphan. (27 Sep 1997) |
| privet cough | An allergic cough, occurring in China during May and June, supposed to be caused by inhalation of the pollen of a species of privet (Lingustrum); it is analogous to the laurel fever seen in New England. (05 Mar 2000) |
| suppressant, cough | A drug used to control coughing, particularly with a dry, nagging, unproductive cough. (12 Dec 1998) |
| kennel cough | An imprecise term which has been used for a number of diseases in dogs which are characterised by bronchitis and caused by a variety of infectious agents. (05 Mar 2000) |
| a-form DNA | <molecular biology> One of several forms that can be assumed by a double helix. A-DNA is stable in dehydrated conditions. This form is less common than the dominant form found under physiological conditions -- beta-DNA. This form is also assumed by DNA-RNA hybrid helices and by regions of double-stranded RNA. It is a right-handed helix and is a more compact form than beta-DNA. (09 Oct 1997) |
| boat form | The less stable of two conformations assumed by 6-membered cyclic sugars (pyranoses) or cyclohexane derivatives, as opposed to chair form. See: Haworth conformational formulas of cyclic sugars. (05 Mar 2000) |
| cavity preparation form | The configuration or shape of a cavity preparation. (05 Mar 2000) |
| replicative form | An intermediate stage in the replication of either DNA or RNA viral genomes that is usually double stranded, the altered, double-stranded form to which single-stranded coliphage DNA is converted after infection of a susceptible bacterium, formation of the complementary ("minus") strand being mediated by enzymes that were present in the bacterium before entrance of the viral ("plus") strand. (05 Mar 2000) |
| resistance form | The shape given to a cavity preparation that enables the dental restoration to withstand masticatory forces. (05 Mar 2000) |
| retention form | The shape of a cavity preparation that prevents displacement of the dental restoration by lateral or tipping forces as well as masticatory forces. (05 Mar 2000) |
| chair form | The more stable of two conformations assumed by 6-membered cyclic sugars (e.g., the pyranoses) or cyclohexane derivatives, as opposed to boat form. See: Haworth conformational formulas of cyclic sugars. (05 Mar 2000) |
| wave form | The form of a pulse; e.g., an arterial pressure or displacement wave; or of the pacemaker pulse as demonstrated on the oscilloscope under a specified load. Synonym: waveshape. (05 Mar 2000) |