coexist
verb (used without object)
to exist together or at the same time.
had been coexisting
-
past perfect progressiveof coexist.past perfect progressive
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
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.
This means two species had been coexisting unnoticed until one appeared farther north in Tohoku.
From Science Daily ● Nov. 1, 2025
