noun
1.
( biology ) the series of forms into which a living thing changes as it develops :
the life cycle of the butterfly
2.
the period of time during which sth, for example a product, is developed and used
noun
1.
( biology ) the series of forms into which a living thing changes as it develops :
the life cycle of the butterfly
2.
the period of time during which sth, for example a product, is developed and used
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005