PÆAN, in the ancient poetry, is a foot consisting of four syllables, of which there are four kinds; the pæan primus, secundus, tertius, and quartus. The pæan primus consists of one long syllable and three short ones, or a trochæus and pyrrhichius, as temporibus; the pæan secundus consists of a short syllable, a long, and two short, or an iambus and a pyrrhichius, as potentia; the pæan tertius consists of two short syllables, with a long and a short one, or a pyrrhichius and a trochæus, as animatus; and the pæan quartus consists of three short syllables and a long one, or a pyrrhichius and iambus, as celeritas.