From Latin paeān (“a hymn, especially a victory hymn, to Apollo or another god”), from Ancient Greek παιᾱ́ν (paiā́n, “a chant or song, especially a thanksgiving or victory hymn, to Apollo under the name Παιᾱ́ν (Paiā́n)”), from the phrase Ἰὼ Παιᾱ́ν (Iṑ Paiā́n, “O Paean!, Thanks to Paean!”).