The most common and most likely answer to this crossword clue is the 8 letter word DIAPAUSE
D
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A
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The straight part
We know that "suspended animation" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case suspended animation = diapause.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DIAPAUSE mean?
DIAPAUSE noun- A temporary pause in the growth and development of an organism due to adverse environmental conditions (especially in insects and in the embryos of many of the oviparous species of fish in the order Cyprinodontiformes)