This is the 7728th most frequent Polish word.
major
"Major" in Polish means "major," a military rank.
The word 'major' refers to a rank in the military hierarchy in this context.
Mój wujek jest majorem w wojsku.
My uncle is a major in the military.
Here, 'major' is used as an adjective meaning significant or important.
To był major przełom w nauce.
That was a major breakthrough in science.
In this sentence, 'major' functions as an adjective describing the extent of the disruption as considerable.