Source : Webster's Revised Unabridged Dictionary (1913)

Hexahemeron \Hex`a*hem"er*on\, n. [NL., fr. Gr. "e`x six + ?
   day; cf. L. hexa["e]meron, Gr. ?.]
   1. A term of six days. --Good.

   2. The history of the six day's work of creation, as
      contained in the first chapter of Genesis.