has been refining
- present perfect progressive of refine (3rd person singular).
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.
Since 2012, the facility has been refining pure metals from raw materials mined in Western Australia, in an intensive and complicated separation procedure.
From Barron's ● Apr. 22, 2026
The BLS has been refining its birth-death model, but to some extent, it will always be an educated guess.
From MarketWatch ● Dec. 12, 2025
“August Blue” is Levy’s eighth novel, and since her 20s, she has been refining her ability to evoke feeling through writing rather than to narrate it.
From New York Times ● Jun. 2, 2023
“The ISU has been refining the judgment system every year, but the right to make the final decision goes to the chief referee. We have to rely on his fair judgement.”
From Seattle Times ● Feb. 8, 2022
Green Dot has been refining its mobile app for a while and it is now extremely easy to use.
From Encyclopedia.com ● Feb. 13, 2018
