accumulate

Over the high ground of the Pennines, there could be 15-20cm of snow accumulating and possibly causing some disruption.

These accumulate and can form aggregates inside the cell.

The artwork was coated with a dark varnish and accumulated dirt over the years, giving the false impression it depicts a night scene.

Over the course of the first quarter of this century, the American presidency has accumulated ever more power, rendering the office increasingly less constrained by either Congress or the courts.

He first developed the habit as an “Air Force brat” kid growing up, moving with his family between the Philippines, Oklahoma and Hawaii, when he began obsessively accumulating information about the television business.