A. An oyster reef is a natural accumulation of oysters.

He also had his pouch, in which were the various odds and ends which are the natural accumulation of all receptacles from a gold meshbag to an attic.

Even the physical landscape is not entirely as it was: sea-levels have changed, and the combination of erosion and silting will have considerably altered the shape of the coast in some places, while the natural accumulation of peat and man-made changes from peat-cutting has altered inland landscapes.

Artificial headlands can occur due to natural accumulation or also through artificial nourishment.

The resort, 20 minutes from Ottawa by car, has one side of the hill for novices and another for experts, and what it lacks in distance (the longest run is 3,600 feet), it makes up for in good snow conditions, with 85 inches of annual natural accumulation.

La Brea Tar Pits, an area in Hancock Park, Los Angeles, where there is a natural accumulation of sticky asphalt derived from an ancient petroleum seep.

One possible factor could be the natural accumulation of iron in the basal ganglia, causing neurodegeneration due to its involvement in toxic free-radical reactions.

I do not keep much in the attic--some books, papers, magazines--the natural accumulation of anyone in my profession; and some of the old furniture that was in the house when I bought it.

Resorts able to make snow will benefit not only from natural accumulations, but also from the ability to make snow and count on it lasting through occasional thaws.