adjective
parallel
B1
parallel: An adjective meaning side-by-side and equidistant, or analogous/similar; also used for simultaneous occurrences (parallel developments). Gradable adjective: comparative paralleler, superlative am parallelsten. Antonym kreuzend. Not a participle. Used attributively or predicatively with normal German adjective endings; no special preposition.
Examples
Die beiden Straßen verliefen parallel, obwohl der ursprüngliche Plan anders aussah.
The two streets ran parallel, although the original plan looked different.
Die beiden Straßen verlaufen parallel zueinander.
The two streets run parallel to each other.
Details
Mnemonics
Imagine two straight railway tracks that never meet; they stay side by side — that's 'parallel'.
parallel — sounds like 'pair' + 'allel' (two things like a pair going along beside each other).