crystallize
verb (used with object)
to form into crystals; cause to assume crystalline form.
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The victory had been crystallizing, after years of overcast and doubt.
From Golf Digest ● Aug. 19, 2019