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English word interdimensional comes from English dimensional, English inter- (Between, amid, among, during, within, mutual, reciprocal.)
dimensional (English)
(comparable) Having dimension or dimensions; three-dimensional.. (mathematics) Appended to cardinal numbers or algebraic symbols to form adjectives meaning "having the stated number of dimensions".. Of or pertaining to dimensions.
inter- (English)
Between, amid, among, during, within, mutual, reciprocal.
interdimensional (English)
Between dimensions.