Simple past tense and past participle of parallel.(verb)
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Use "parallelled" in a sentence
"This parallelled his true situation, where he had a normal face until being exposed to poison gas during WWI, which triggered the onset of the head-enlarging syndrome known as acromegaly."
"It's not all the Club for Growth's fault, of course, but the narrowness of their (fiscal) vision is parallelled by other forces within contemporary conservatism that have left the party older and whiter and more religious than America as a whole."
"Which is parallelled by a growth of people making really weird uses of the minimal data we have so far."