| aberrant regeneration | Misdirected regrowth of nerve fibres seen for example, after oculomotor nerve injury. Synonym: misdirection phenomenon. (05 Mar 2000) |
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| bone regeneration | Renewal or repair of lost bone tissue. It excludes callus formed after bone fracture but not yet replaced by hard bone. (12 Dec 1998) |
| regeneration | The natural renewal of a structure, as of a lost tissue or part. Origin: L. Generare = to produce, bring to life (18 Nov 1997) |
| regeneration harvest | A timber harvest method that removes selected trees in the existing stand to a density that allows for the establishment of a new even-aged stand below. (05 Dec 1998) |
| regeneration with reserves | Similar to a regeneration harvest, except that a number of green trees are left standing to meet other resource needs such as wildlife habitat. The number of trees left is usually specified as a certain number of trees per acre. (05 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) |
| coppice regeneration | The ability of certain hardwood species to regenerate by producing multiple new shoots from a stump left after harvest. (05 Dec 1998) |
| nerve regeneration | Renewal or physiological repair of damaged nerve tissue. (12 Dec 1998) |
| liver regeneration | Repair or renewal of hepatic tissue. (12 Dec 1998) |
| ABC process | Purification of water or deodorization of sewage by a mixture of alum, blood, and charcoal. (05 Mar 2000) |
| accessory process | A small apophysis at the posterior part of the base of the transverse process of each of the lumbar vertebrae. Synonym: processus accessorius, accessory tubercle. (05 Mar 2000) |
| acromial process | <anatomy> The lateral triangular projection of the spine of the scapula that forms the point of the shoulder and articulates with the clavicle. (27 Sep 1997) |
| activated sludge process | <procedure> A method of treating sewage and wastewater through microbial oxidation. Sewage previously treated in settling tanks is aerated to encourage the growth of nonpathogenic aerobic microorganisms (bacteria, yeasts, moulds and protozoans) which break the organic matter down into carbon dioxide, water and simple salts. After this activated sludge is produced, the wastewater undergoes further processing through anaerobic digestion, filtering and chlorination. (29 Dec 1997) |
| adiabatic process | <chemistry> A process in which the system does not exchange heat with the surroundings. (15 Jan 1998) |
| agene process | Bleaching of flour with nitrogen trichloride (prohibited in the United States). (05 Mar 2000) |