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| the ability of a population to maintain or increase its numbers in succeeding generations |
| the basic category of biological classification, composed of individuals that resemble one another are able to breed with one another |
| vitalism (ˈvaɪtəˌlɪzəm) | |
| —n | |
| dynamism Compare mechanism the philosophical doctrine that the phenomena of life cannot be explained in purely mechanical terms because there is something immaterial which distinguishes living from inanimate matter | |
| 'vitalist | |
| —n, —adj | |
| vital'istic | |
| —adj | |
vitalism
school of scientific thought-the germ of which dates from Aristotle-that attempts (in opposition to mechanism and organicism) to explain the nature of life as resulting from a vital force peculiar to living organisms and different from all other forces found outside living things. This force is held to control form and development and to direct the activities of the organism. Vitalism has lost prestige as the chemical and physical nature of more and more vital phenomena have been shown.
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