Crossword Genius

Theoretical tunnel through space-time (8)

Ross

I believe the answer is:

wormhole

(Other definitions for wormhole that I've seen before include "Hypothetical tunnel in space-time" , "could be ruined?" , "Hypothetical link across space-time" , "Cavity make in wood by burrowing larvae" , "In theory, shortcut in space" .)

I've seen this clue in the USA Today.
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