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 pioneered
-
past perfectof pioneer.past perfect
Used to express a completed action that took place before another specific past action occurred.
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.
Researchers at MIT and Stanford had pioneered work on carbon capture and enhanced oil recovery.
From Salon ● Jun. 26, 2026
Edna Foa, a clinical psychologist, died March 24 at 88, had pioneered prolonged exposure therapy for PTSD.
From The Wall Street Journal ● Apr. 3, 2026
The move was followed by an unusual drop in subscribers that startled investors and intensified concerns that Netflix was losing dominance over the industry it had pioneered.
From BBC ● Apr. 18, 2024
She found a doctor who had pioneered new techniques in facial feminization surgery to shave down her jaw, sculpt her nose and plump her lips.
From Los Angeles Times ● Apr. 12, 2022
He believed the Rad Lab was destined to face inevitable decline as physics progressed and competitive laboratories emerged—many of them built on the model Lawrence had pioneered.
From "Big Science" by Michael Hiltzik
