have been evolving
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present perfect progressiveof evolve.present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
evolveverb (used with object)to develop gradually.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Some systems therefore appear to have shut off their jets only recently, while others have been evolving without active jets for much longer.
From Science Daily ● Sep. 4, 2026
Beshir and Kelly have been evolving it during its L.A. run, recently adding a stronger painting component by giving guests their own canvas to work on throughout the evening.
From Los Angeles Times ● Jul. 8, 2026
Some of my shows have been evolving over 30 years.
From The Wall Street Journal ● Apr. 20, 2026
“It looks like during the infection of this individual, the virus could have been evolving towards at least some of the mutations that would adapt it to humans.”
From Science Magazine ● Dec. 5, 2024
This is a simple acceptance, in social terms, of the economic forms that have been evolving since the industrial revolution.
From The Next Step A Plan for Economic World Federation by Scott Nearing