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the entire life history of a living organism.
Farlex Partner Medical Dictionary © Farlex 2012
1. The course of developmental changes through which an organism passes from its inception through the stage at which it reproduces.
2. A progression through a series of differing stages of development: the life cycle of a star.
3. The span of a product's existence from its initial development through the period of marketing and active use to eventual obsolescence.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
life cyclethe serial progression of stages through which an organism passes from FERTILIZATION to the stage producing the GAMETES. In higher animals and plants the life cycle lasts from fertilization until the resulting individual itself produces gametes, but in many organisms there are asexual stages. see ALTERNATION OF GENERATIONS.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005