permuto

per-mūtō āvī, ātus, āre,

to change throughout, alter completely: omnem rei p. statum.—To interchange, exchange: captivos, L.: galeam, V.: valle Sabinā divitias, H.—Of money, to exchange, pay by bill of exchange: illud, quod tecum permutavi, you remitted to me by bill of exchange: curasse, ut cum quaestu populi pecunia permutaretur.