crust
noun
the brown, hard outer portion or surface of a loaf or slice of bread (distinguished from crumb).
are crusting
-
present progressiveof crust.present progressive
Used to describe an ongoing action or state that is currently taking place in the immediate present.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Nationwide, salts are crusting the insides of home boilers and the cooling tanks of power plants.
From Scientific American ● Dec. 6, 2018
