focal point

I could vary the focal point from a few feet to several miles.

Toward a focal point: from the east, two people; from the north, two people.

It is naturally the focal point of the trade between Europe and Asia.

All the blood seemed to have settled in his eyes as at a focal point.

We have seen that I0 (the intensity at the focal point) was equal to A/λf.

Their focal point seemed to be the trees at the foot of the cleft.

Rain, therefore, is the focal point from which all their thoughts radiate.

The conductor's intentions were still at the focal point of her mind.

After the success or failure of a nest, a new site is selected to which the focal point of activity is shifted.

The building of a nest establishes a focal point of activity in a somewhat more restricted area than that originally occupied.