Simple past tense and past participle of propagate.(verb)
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Use "propagated" in a sentence
"This was the phrase propagated by Sarah Palin for which the word lie is itself insufficient."
"The divisiveness and hate mongering that Sarah Palin propagated during her election run is not only unforgivable, it was treasonous."
"He explained them by the condition that the mutual repulsion of two particles of ether needs a certain time to be propagated from the one to the other; it was in fact an axiom with him that everything which occurs in Nature takes a certain length of time, however short this may be."