ˈiː ɪlˈɛvən ɔːɹ ˈiː ˈeɪt plˈʌsplˈʌsplˈʌs æz ɐ θɹˈiːnˈoʊd vˈɛɹiɛkstˈɛndᵻd ˈiː ˈeɪt ɪz ɐ lɔːɹˈɛntsiən ˈældʒᵻbɹə, kəntˈeɪnɪŋ wˈʌn tˈaɪmlˈaɪk ɪmˈædʒɪnˌɛɹi dᵻmˈɛnʃən, ðɐthɐzbˌɪn kəndʒˈɛktʃɚd tə dʒˈɛnɚɹˌeɪt ðə sˈɪmətɹi "ɡɹˈuːp" ʌv ˈɛmθˈiəɹi.
E11 (or E8+++ as a (three-node) very-extended E8) is a Lorentzian algebra, containing one time-like imaginary dimension, that has been conjectured to generate the symmetry "group" of M-theory.