concentrate at some place

concentrate at (some place)

1. To have people gather in a particular place or area. In this usage, a noun or pronoun is used between "concentrate" and "at." Concentrate all the guests at the entrance to the venue for now—I don't want them to see the wedding party just yet.
2. To gather in a particular place or area in large numbers. Most of the guests are concentrated at the buffet right now. I had a hard time getting down the hallway because so many students were concentrated at the door to the gym.
See also: concentrate

concentrate at some place

to gather thickly at a place. The moths concentrated at the window at night, attracted by the light. All the thirsty children concentrated at the water fountain.
See also: concentrate, place