the GNU version of the Collaborative International Dictionary of English
adj. Becoming, or causing to become, rejuvenated; rejuvenating.
The Century Dictionary and Cyclopedia
Becoming or become young again.
Word Usage
"The ghost of Bill Totts had been successfully laid, and Freddie Drummond with rejuvenescent zeal tackled a brochure, long-planned, on the topic of "diminishing returns.""