On the left, folding up into the concavity of the wall, like the upper berth of a Pullman sleeping car, was my bunk.
The shell was slightly concave, the concavity turned to the front.
The Horseshoe form, with the concavity facing downwards, is an obvious and necessary consequence of this action.
Three, however, had had their concavity partly whittled flat.
In some instances the margin of the concavity shows signs of notable abrasion.
The Bee seems to make a point of this concavity, for it serves as a mould to receive the curved bottom of the next cell.
Presently the concavity in the ocean mounted to level, and its rotation slowly died away.
Very shortly a cup-shaped form is assumed, the concavity of which is lined by the more columnar cells.
A concavity at the apex of the thigh, underneath, to receive the base of the Tibia.
The iliac crest, extending directly from one spine to the other, is curved, its concavity being turned upwards.
concavity con·cav·i·ty (kŏn-kāv'ĭ-tē)
A hollow or depression that is curved like the inner surface of a sphere.