spacetime Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. The concept that combines space and time into a single idea. Example Sentence The theory of relativity is based on the concept of spacetime. Synonyms space-time continuum; four-dimensional continuum; Minkowski space Antonyms space; time Hear It! Say It! Write It! spacetime Switch to cursive Start Share with your friends:
