messianic /ˌmɛsaɪˈænɪk/ adjective2 •Of, relating to, or resembling a messiah or the Messiah.There’s been a change in President Donald Trump. He used to say he had accomplished more than any other President, a debatable claim. But now he’s using messianic language about himself. — 2019 •Of, relating to, or resembling messianism.