master
noun
a person with the ability or power to use, control, or dispose of something.
had mastered
-
past perfectof master.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.
Western officials and outside experts said the quick start-up of centrifuges was an accomplishment, but added that it would take at least six months to be sure Iran had mastered the enrichment process.
From The Wall Street Journal ● Apr. 6, 2026
Until recently, D’Amaro had mastered another Wambsgansian trait: the ability to play softy while the CEO fielded the outrage from visitors and investors that ensued thanks to these incidents.
From Slate ● Feb. 4, 2026
But by the end of that season, Myles said, Marks had mastered the zone-run concepts at the heart of his offense, and as a sophomore, he exploded for 2,127 yards in 13 games.
From Los Angeles Times ● Oct. 11, 2024
While she had mastered cell culture techniques — essentially promoting the growth of cells under controlled conditions — Epstein was having trouble sustaining the growth of cells in his lab.
From New York Times ● Mar. 21, 2024
I played each title until I had mastered it, then moved on to the next one.
From "Ready Player One: A Novel" by Ernest Cline
