| physical dependence | <pharmacology> Physiologic adaptation of the body to the presence of opioid is required to maintain the same level of analgesia. (31 Dec 1997) |
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| anchorage dependence | <cell biology, cell culture> The necessity for attachment (and spreading) in order that a cell will grow and divide in culture. Loss of anchorage dependence seems to be associated with greater independence from external growth control and is probably one of the best correlates of tumourigenicity in vivo. Anchorage independence is usually detected by cloning cells in soft agarose, only anchorage independent cells will grow and divide (as they will in suspension). (18 Nov 1997) |
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| morphine dependence | Strong dependence, both physiological and emotional, upon morphine. (12 Dec 1998) |
| heroin dependence | Strong dependence, both physiological and emotional, upon heroin. (12 Dec 1998) |
| psychological dependence | <psychiatry> Pattern of compulsive drug use characterised by a continued craving for an opioid and the need to use the opioid for effects other than pain relief. (16 Dec 1997) |
| substance dependence | A pattern of behavioural, physiologic, and cognitive symptoms that develop due to substance use or abuse; usually indicated by tolerance to the effects of the substance and withdrawal symptoms that develop when use of the substance is terminated. (05 Mar 2000) |
| dependence | The quality or condition of relying upon, being influenced by, or being subservient to a person or object reflecting a particular need. Origin: L. Dependeo, to hang from (05 Mar 2000) |
| drug dependence | Use of a drug for a reason other than which it was intended or in a manner or in quantities other than directed. Drug dependence is a compulsion to take a drug to produce a desired effect or prevent unpleasant effects when the drug is withheld. Risk factors for drug abuse include: low self esteem, inability to deal with stress and emotional instability. Juveniles use drugs due to peer pressure. Signs of drug use in children include: a change in friends or group, long absences from home, poor performance in school, seclusion, stealing, lying, criminal behaviour, deteriorating family relationships, signs of drug intoxication and changes in behaviour. Commonly abused drugs include narcotic analgesic agents, benzodiazepines, cocaine, amphetamines, barbiturates, marijuana, LSD and phencyclidine. Many labs now offer quick and inexpensive urine drug screening. Psychological counseling and parental support will be necessary in children with this problem. (27 Sep 1997) |
| inverse density dependence | <epidemiology> See density dependence. (05 Dec 1998) |
| field dependence-independence | The ability to respond to segments of the perceptual experience rather than to the whole. (12 Dec 1998) |
| anthropology, physical | The comparative science dealing with the physical characteristics of man as related to his origin, evolution, and development in his total environment. (12 Dec 1998) |
| map, physical | A map of the locations of identifiable landmarks on chromosomes. Physical distance is measured in base pairs. The physical map differs from the genetic map which is based purely on genetic linkage data. In the human genome, the lowest-resolution physical map is the banding patterns of the 24 different chromosomes. The highest-resolution physical map is the complete nucleotide sequence of all chromosomes, a future goal. (12 Dec 1998) |
| restraint, physical | Use of a device for the purpose of preventing the individual from moving all or part of the body. The concept excludes splints and casts. (12 Dec 1998) |
| roentgen-equivalent physical | <radiobiology, unit> A roentgen equivalent physical is a unit of absorbed radiation approximately equivalent to a roentgen, an international unit of x- or gamma-radiation. An obsolete unit of measurement; that quantity of ionizing radiation of any kind which, upon absorption by living tissue, produces an energy gain per gram of tissue equivalent to that produced by 1 roentgen of X-rays or gamma-rays. Acronym: rep See: rad. (05 Mar 2000) |
| physical | Pertaining to the body, to material things or to physics. (18 Nov 1997) |
| physical age | The age in terms of structure rather than of function or of passage of time. Synonym: physical age. (05 Mar 2000) |