pioneer
noun
a person who is among those who first enter or settle a region, thus opening it for occupation and development by others.
had been pioneering
-
past perfect progressiveof pioneer.past perfect progressive
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
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.
He had been pioneering CCL21 therapy for cancers, based on evidence that the protein stimulates immune cell proliferation and other responses.
From Science Magazine ● Jun. 6, 2024
Food and Drug Administration, Goyal and other early adopters had been pioneering the technique with patients who had no other hope.
From New York Times ● Mar. 1, 2023
Mr Clawley said the Post and Mail Building had been "pioneering".
From BBC ● Dec. 19, 2012
But last fortnight London's Society for Cultural Relations with the U. S. S. R. showed Londoners that the Soviet Government had been pioneering in film records.
From Time Magazine Archive
