To propagate is to breed plants or animals, to cause something to increase in number, or to spread an idea.(verb)
See propagate in Webster's New World College Dictionary
Origin: < L propagatus, pp. of propagare, to peg down, set < propago, slip for transplanting < pro-, before + pag-, base of pangere, to fasten: see peace
See propagate in American Heritage Dictionary 4
verb prop·a·gat·ed, prop·a·gat·ing, prop·a·gates verb, transitive
Origin: Latin prōpāgāre, prōpāgāt-; see pag- in Indo-European roots.
Learn more about propagate