D defs.my
Entry 1 sense Webster, 1913

Phenomenal

/fən-äm'-ən-əl/ · Phe·nom·e·nal · IPA /fɪˈnɑmɪnəl/
01 a. Relating to, or of the nature of, a phenomenon; hence, extraordinary; wonderful; as, a phenomenal memory.
  1. 1.
    Relating to, or of the nature of, a phenomenon; hence, extraordinary; wonderful; as, a phenomenal memory.