| organic debris | <ecology> Debris consisting of plant or animal material. (11 Jan 1998) |
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| debris | 1. <geology> Broken and detached fragments, taken collectively; especially, fragments detached from a rock or mountain, and piled up at the base. 2. Rubbish, especially such as results from the destruction of anything; remains; ruins. Origin: F, fr. Pref. De- (L. Dis) + briser to break, shatter; perh. Of Celtic origin. Source: Websters Dictionary (01 Mar 1998) |
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| large woody debris | Dead woody material greater than 20" in diameter on the ground or in a stream or river. It may consist of logs, trees, or parts of trees. Large woody debris contributes to long-term site productivity and health in several ways. It supplies nutrients to the soil, supports symbiotic fungi that are beneficial to conifers, and provides habitat for beneficial rodents and insects. (05 Dec 1998) |
| acute organic brain syndrome | <syndrome> A constellation of behavioural or psychological signs and symptoms including problems with attention, concentration, memory, confusion, anxiety, and depression caused by transient or permanent dysfunction of the brain. Synonym: acute organic brain syndrome, OBS, organic mental syndrome. (05 Mar 2000) |
| volatile organic compounds | (VOC) Emissions of non-methane hydrocarbons, measured by standard DEQ methods. (05 Dec 1998) |
| substance-induced organic mental disorders | Mental disorders caused by use of drugs, e.g., cocaine. (05 Mar 2000) |
| organic | Any foods grown without the use of chemical fertilisers or pesticides, in soil made rich by composting and mulching. Pertaining to carbon-based compounds produced by living plants, animals or by synthetic processes. (27 Sep 1997) |
| organic acid | An acid made up of molecules containing organic radicals; e.g., acetic acid, citric acid, which contain the ionizable -COOH group. (05 Mar 2000) |
| organic brain syndrome | <syndrome> A constellation of behavioural or psychological signs and symptoms including problems with attention, concentration, memory, confusion, anxiety, and depression caused by transient or permanent dysfunction of the brain. Synonym: acute organic brain syndrome, OBS, organic mental syndrome. (05 Mar 2000) |
| organic catalyst | A catalyst that is an organic molecule. See: enzyme, ribozyme. (05 Mar 2000) |
| organic chemicals | A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form. (12 Dec 1998) |
| organic chemistry | <chemistry> A branch of chemistry that deals specifically with the structures, synthesis and reactions of carbon-containing compounds. (11 Jan 1998) |
| organic compound | <chemistry> A compound containing carbon. (11 Jan 1998) |
| organic contracture | Contracture, usually due to fibrosis within the muscle that persists whether the subject is conscious or unconscious. Synonym: fixed contracture. (05 Mar 2000) |
| organic deafness | Deafness due to a pathologic process or an organic aetiology, as opposed to psychogenic deafness. (05 Mar 2000) |
| organic delusions | False beliefs experienced in the delirium associated with dementia in conjunction with traumatic injury to the brain, or an organic change in the brain such as in Alzheimer's syndrome, or in cocaine or other drug intoxication. (05 Mar 2000) |