Source : Webster's Revised Unabridged Dictionary (1913)

Primordial \Pri*mor"di*al\, a. [L. primordialis, from primordium
   the first beginning; primus first + ordiri to begin a web, to
   begin: cf. F. primordial.]
   1. First in order; primary; original; of earliest origin; as,
      primordial condition. ``The primordial facts of our
      intelligent nature.'' --Sir W. Hamilton.

   2. (Geol.) Of or pertaining to the lowest beds of the
      Silurian age, corresponding to the Acadian and Potsdam
      periods in American geology. It is called also {Cambrian},
      and by many geologists is separated from the Silurian.

   3. (Biol.) Originally or earliest formed in the growth of an
      individual or organ; as, a primordial leaf; a primordial
      cell.

   {Primordial utricle} (Bot.), the interior lining of a young
      vegetable cell.