To Concentrate
To Focus
する verb
You collect and focus in on the middle. Really zoom in on it. When you do this, you're concentrating on this spot, thus making the meaning of this word to concentrate or to focus.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
みんなが集中すればこの仕事は五時までに終わるはずだよ。
This work should be done by five if everyone concentrates.
クラスが終わるまで集中して!
Focus until class is over!
人の前だと集中して本が読めないんです。
I can't concentrate on reading books when I'm around people.