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Definition of: rejuvenescence
(ri·j
′və·nes′əns) noun
1. A renewal of youth; the state of being or growing young again.
2. Biol. The transformation of the entire protoplasm of a vegetative cell into a primordial cell, which subsequently invests itself with a new cell wall, and forms the starting point of the life of a new individual. [<L rejuvenescens, ppr. of rejuvenescere renew youth <re- again + juvenescere grow young <juvenis young]
—re·ju′ve·nes′cent adjective
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