The terms Southeast Asia and Oceania, devised in the 19th century, have had several vastly different geographic meanings since their inception.
ðə tˈɜːmz sˈaʊθiːst ˈeɪʒə ænd ˌoʊʃɪˈɑːniə, dɪvˈaɪzd ɪnðə nˈaɪntiːnθ sˈɛntʃɚɹi, hæv hæd sˈɛvɹəl vˈæstli dˈɪfɹənt dʒˌɪəɡɹˈæfɪk mˈiːnɪŋz sˈɪns ðɛɹ ɪnsˈɛpʃən.