The most common and most likely answer to this crossword clue is the 9 letter word CHANNELED
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More clues leading to the result CHANNELED
Buddy explains!

The straight part
We know that "concentrated in US" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case concentrated in us = channeled.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CHANNELED mean?
CHANNELED verb- To make or cut a channel or groove in.
- To direct or guide along a desired course.
- (of a spirit, as of a dead person) To serve as a medium for.
- To follow as a model, especially in a performance.
- Having a vehicle's height reduced by lowering the body with respect to the frame rails.