From his posture and concentration, I could see he was looking for something more.

He explained that his father had been suffering from poor concentration for two years.

I heard a woman fall off her ladder from sheer concentration.

But the festival's impact came from its concentration of experimental dance activity.

Movement of gases is by diffusion from high concentrations to lower.

In the second year students can choose elective subjects from concentrations or design their own.

And there was not an ounce of energy to spare from his intense concentration.

Well over two million people are at risk from excessive concentrations of lead, which damages children's brains.

He was sweating from effort and concentration both by the time he got down to ground level.

The windows are not intended to provide a view to the outside, which would detract from the participants' concentration.