layer
noun
a thickness of some material laid on or spread over a surface.
Used to describe an action that began in the past, has continued continuously, and is still in progress.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
But the Killers have been layering progressive synth tones into arena rock for over a decade; if anyone can reassert the genre’s viability atop the pop charts today, it’s likely the Killers.
From Los Angeles Times ● Sep. 7, 2017