Moreover, the DSM changes risk an erosion of the autism spectrum at the higher-functioning end.
Tannen sees an erosion of the barriers between public and private conversations.
But Romney is polling strong in the state due in part to an erosion of white support for Obama.
erosion e·ro·sion (ĭ-rō'zhən)
Superficial destruction of a surface by friction, pressure, ulceration, or trauma.
The wearing away of a tooth by chemical or abrasive action. Also called odontolysis.
The gradual wearing away of land surface materials, especially rocks, sediments, and soils, by the action of water, wind, or a glacier. Usually erosion also involves the transport of eroded material from one place to another, as from the top of a mountain to an adjacent valley, or from the upstream portion of a river to the downstream portion.