Her entire attention was concentrated on her children.
Please concentrate on your studies and not your hobbies.
So I concentrated on the rhythmic side of things, and therefore left a lot of holes.
You've got to concentrate bigtime.
His reflexes were slowing as he tried to concentrate on the game.
WordNet 3.0 Sense Numbers: 2
WordNet Verb Particle Constructions, Multiword Expressions:
Because their electrons aren't as tightly concentrated, the resulting attraction is too weak.
In the district of Krosno the occupiers concentrated the Jew population in the ghettos.
WordNet 3.0 Sense Numbers: 3, 5, 6
The cook concentrated the sauce by boiling if for a long time.
A series of five emptied bladders concentrated the bile coming to them.
I concentrated the sample to dryness, then dissolved in ethyl acetate.
WordNet 3.0 Sense Numbers: 1, 4, 7, 8