Crossword clue for "SPACETIME"SPACETIMEMajor subject for 20- and 55-Across, or a hint to interpreting several squares in this puzzle
Other crossword clues for answer "SPACETIME"SPACETIME*Four-dimensional mathematical system___ continuum.What a wormhole is a tunnel inWarped fabric, it's saidFour-dimensional mathematical model of the universeFour-dimensional system