| guiacol | <chemistry> A colourless liquid, C6H4,OCH3.OH, resembling the phenols, found as a constituent of woodtar creosote, aud produced by the dry distillation of guaiac resin. Origin: Guiac + -ol. Source: Websters Dictionary (01 Mar 1998) |
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| guib | <zoology> A West African antelope (Tragelaphus scriptus), curiously marked with white stripes and spots on a reddish fawn ground, and hence called harnessed antelope. Synonym: guiba. Source: Websters Dictionary (01 Mar 1998) |
| guidance | Directed locomotory response of cells to an anisotropy of the environment, for example the tendency of fibroblasts to align along ridges or parallel to the alignment of collagen fibres in a stretched gel. (18 Nov 1997) |
| guide | 1. A person who leads or directs another in his way or course, as in a strange land; one who exhibits points of interest to strangers; a conductor; also, that which guides; a guidebook. 2. One who, or that which, directs another in his conduct or course of lifo; a director; a regulator. "He will be our guide, even unto death." (Ps. Xlviii. 14) 3. Any contrivance, especially one having a directing edge, surface, or channel, for giving direction to the motion of anything, as water, an instrument, or part of a machine, or for directing the hand or eye, as of an operator; as: A blade or channel for directing the flow of water to the wheel buckets. <surgery> A strip or device to direct the compositor's eye to the line of copy he is setting. 4. A noncommissioned officer or soldier placed on the directiug flank of each subdivision of a column of troops, or at the end of a line, to mark the pivots, formations, marches, and alignments in tactics. Guide bar, an additional rail, between the others, gripped by horizontal driving wheels on the locomotive, as a means of propulsion on steep gradients. Origin: OE. Giae, F. Guide, It. Guida. Source: Websters Dictionary (01 Mar 1998) |
| guide plane | A fixed or removable device used to displace a single tooth, an arch segment, or an entire arch toward an improved relationship. (05 Mar 2000) |
| guide RNA | <molecular biology> Small RNA molecules that hybridise to specific mRNAs and direct their RNA editing. (18 Nov 1997) |
| guidebooks | Handbooks for travelers that give information about a city, region, or country, or similar handbooks about buildings, museums, etc. (12 Dec 1998) |
| guided tissue regeneration | The repopulating of the periodontium, after treatment for periodontal disease. Repopulation is achieved by guiding the periodontal ligament progenitor cells to reproduce in the desired location by blocking contact of epithelial and gingival connective tissues with the root during healing. This blocking is accomplished by using synthetic membranes or collagen membranes. (12 Dec 1998) |
| guideline | A set of statements, directions, or principles presenting current or future rules or policy. Guidelines may be developed by government agencies at any level, institutions, organizations such as professional societies or governing boards, or by the convening of expert panels. The text may be cursive or in outline form, but it is generally a comprehensive guide to problems and approaches in any discipline or activity. This concept relates to the general conduct and administration of health care activities rather than to specific decisions for a particular clinical condition. For that aspect, practice guideline is available. (12 Dec 1998) |
| guideline adherence | Conformity in fulfilling or following official, recognised, or institutional requirements, guidelines, recommendations, protocols, pathways, or other standards. (12 Dec 1998) |
| guidelines | Directions or principles presenting current or future rules of policy. Guidelines may be developed by government agencies at any level, institutions, professional societies, governing boards, or by the convening of expert panels. The text may be cursive or in outline form but is generally a comprehensive guide to problems and approaches in any field of activity. For guidelines in the field of health care and clinical medicine, practice guidelines is available. (12 Dec 1998) |
| guideress | A female guide. Source: Websters Dictionary (01 Mar 1998) |
| guidewire | A long and flexible fine spring used to introduce and position an intravascular angiographic catheter (see Seldinger technique). (05 Mar 2000) |
| guidguid | <zoology> A South American ant bird of the genus Hylactes. Synonym: barking bird. Source: Websters Dictionary (01 Mar 1998) |
| guiding centre | <radiobiology> Particles placed in a magnetic field will gyrate in circles around the magnetic field lines, and drift in various directions. The guiding centre represents the instantaneous centre of the circular motion. The idea is that you can think of the guiding centre as drifting, and the particle as orbiting the guiding centre. (09 Oct 1997) |