Nycthemeron

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Nycthemeron \Nyc*the"me*ron\, n. [Gr. ?; ny`x, nykto`s, night +
     ? day.]
     The natural day and night, or space of twenty-four hours.
     [1913 Webster]