Emily Dickinson Lexicon

propagate (-s), v. [L. propāgāre, multiply plants by means of layers or slips, breed, enlarge, extend, prolong the stock or race of < prō, forth, out + pangěre, fix, fasten, set, plant.]

Spread; circulate; reach; [fig.] disillusion; disenchant; destroy innocence by informing of unpleasant truth.