| structural formula | A formula in which the connections of the atoms and groups of atoms, as well as their kind and number, are indicated. Synonym: constitutional formula, graphic formula. (05 Mar 2000) |
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| structural gene | A gene that codes for a product (e.g. An enzyme, structural protein, tRNA), as opposed to a gene that serves a regulatory role. (18 Nov 1997) |
| structural interface | In dentistry, a boundary between tooth and restorative material. (05 Mar 2000) |
| structural isomerism | Isomerism involving the same atoms in different arrangements; e.g., butyric acids, leucine and isoleucine, glucose and fructose. (05 Mar 2000) |
| structural isomers | <chemistry> Are organic compounds that have the same som formula, meaning the same number of carbons, hydrogens or other type ot atoms. They differ from each other in the way the atoms are connected. Examples are n-butane and 2-methylpropane or ethanol and dimethylether. (09 Jan 1998) |
| hearing loss, functional | Hearing loss without a physical basis. (12 Dec 1998) |
| orthodontic appliances, functional | Loose, usually removable intra-oral devices which alter the muscle forces against the teeth and craniofacial skeleton. These are dynamic appliances which depend on altered neuromuscular action to effect bony growth and occlusal development. They are usually used in mixed dentition to treat paediatric malocclusions. (ada, 1992) (12 Dec 1998) |
| functional | 1. Pertaining to, or connected with, a function or duty; official. 2. <physiology> Pertaining to the function of an organ or part, or to the functions in general. <medicine> Functional disease, a disease of which the symptoms cannot be referred to any appreciable lesion or change of structure; the derangement of an organ arising from a cause, often unknown, external to itself opposed to organic disease, in which the organ itself is affected. Source: Websters Dictionary (01 Mar 1998) |
| functional albuminuria | A collective term denoting types of benign albuminuria that are associated with physical exertion or other conditions in which there are physiologic changes such as during pregnancy or adolescence. Synonym: physiologic albuminuria. (05 Mar 2000) |
| functional anatomy | Anatomy studied in its relation to function. Synonym: morphophysiology, physiological anatomy. (05 Mar 2000) |
| functional aphasia | Nonorganic aphasia related to conversion hysteria. (05 Mar 2000) |
| functional apoplexy | A condition simulating apoplexy without any cerebral lesion; a form of conversion hysteria. (05 Mar 2000) |
| functional blindness | Apparent loss of vision related to suggestibility. (05 Mar 2000) |
| functional cardiovascular disease | A euphemism for cardiovascular symptoms deemed to be psychogenic. More generally, sometimes used for abnormal cardiac function. (05 Mar 2000) |
| functional castration | Gonadal atrophy produced by prolonged treatment with sex hormones. (05 Mar 2000) |