| dis- | 1. <prefix> A prefix from the Latin, whence F. Des, or sometimes de-, dis-. The Latin dis- appears as di- before b, d, g, l, m, n, r, v, becomes dif- before f, and either dis- or di- before j. It is from the same root as bis twice, and duo, E. Two. See Two, and cf. Bi-, Di-, Dia-. Dis- denotes separation, a parting from, as in distribute, disconnect; hence it often has the force of a privative and negative, as in disarm, disoblige, disagree. Also intensive, as in dissever. Walker's rule of pronouncing this prefix is, that the s ought always to be pronounced like z, when the next syllable is accented and begins with "a flat mute [b, d, v, g, z], a liquid [l, m, n, r], or a vowel; as, disable, disease, disorder, disuse, disband, disdain, disgrace, disvalue, disjoin, dislike, dislodge, dismay, dismember, dismiss, dismount, disnatured, disrank, disrelish, disrobe." Dr. Webster's example in disapproving of Walker's rule and pronouncing dis- as diz in only one (disease) of the above words, is followed by recent orthoepists. See Disable, Disgrace, and the other words, beginning with dis-, in this Dictionary. 2. A prefix from Gr. Twice. See Di-. (29 Oct 1998) |
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| membrane lipids | Lipids, predominantly phospholipids, cholesterol and small amounts of glycolipids found in membranes including cellular and intracellular membranes. These lipids may be arranged in bilayers in the membranes with integral proteins between the layers and peripheral proteins attached to the outside. Membrane lipids are required for active transport, several enzymatic activities and membrane formation. (12 Dec 1998) |
| compound lipids | Lipids containing N and P atoms in addition to the usual C, H, and O. Compare: homolipids. Synonym: compound lipids. (05 Mar 2000) |
| simple lipids | Lipids containing only C, H, and O. Compare: heterolipids. Synonym: simple lipids. (05 Mar 2000) |
| lipids | Biological molecules soluble in apolar solvents, but only very slightly soluble in water. They are an heterogenous group (being defined only on the basis of solubility) and include fats, waxes and terpenes. (18 Nov 1997) |
| lipids and antilipaemic agents | A collective grouping for lipids and substances that maintain normal blood lipid levels. (12 Dec 1998) |
| adolescent health services | Organised services to provide health care to adolescents, ages ranging from 13 through 18 years. (12 Dec 1998) |
| allied health occupations | Occupations of medical personnel who are not physicians, and are qualified by special training and, frequently, by licensure to work in supporting roles in the health care field. These occupations include, but are not limited to, medical technology, physical therapy, physician assistant, etc. (12 Dec 1998) |
| allied health personnel | Health care workers specially trained and licensed to assist and support the work of health professionals. Often used synonymously with paramedical personnel, the term generally refers to all health care workers who perform tasks which must otherwise be performed by a physician or other health professional. (12 Dec 1998) |
| allied health professional | An individual trained to perform services in the care of patients other than a physician or registered nurse; includes a variety of therapy technicians (e.g., pulmonary), radiology technicians, physical therapists, etc. (05 Mar 2000) |
| area health education centres | Education centres authorised by the comprehensive health manpower training act, 1971, for the training of health personnel in areas where health needs are the greatest. May be used for centres other than those established by the united states act. (12 Dec 1998) |
| attitude of health personnel | Attitudes of personnel toward their patients, other professionals, toward the medical care system, etc. (12 Dec 1998) |
| attitude to health | Public attitudes toward health, disease, and the medical care system. (12 Dec 1998) |
| behavioural health | An interdisciplinary field dedicated to promoting a philosophy of health that stresses individual responsibility in the application of behavioural and biomedical science knowledge and techniques to the maintenance of health and prevention of illness and dysfunction by a variety of self-initiated individual and shared activities. (05 Mar 2000) |
| care proxy, health | A health care proxy is one form of advance medical directive. Advance medical directives preserve the person's right to accept or reject a course of medical treatment even after that person becomes mentally or physically incapacitated to the point of being unable to communicate those wishes. There are two basic forms of advance directives: 1. A living will, in which the person outlines specific treatment guidelines that are to be followed by health care providers. 2. A health care proxy (also called a power of attorney for health-care decision-making) in which the person designates a trusted individual to make medical decisions in the event that he or she becomes too incapacitated to make such decisions. Advance directive requirements vary greatly from one jurisdiction to another and should therefore be drawn up in consultation with an attorney who is familiar with the laws of the particular jurisdiction. (This entry is based upon material from the National MS Society). (12 Dec 1998) |