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.

Cambrian \Cam"bri*an\, a.
   1. (Geog.) Of or pertaining to Cambria or Wales.

   2. (Geol.) Of or pertaining to the lowest subdivision of the
      rocks of the Silurian or Molluscan age; -- sometimes
      described as inferior to the Silurian. It is named from
      its development in Cambria or Wales. See the Diagram under
      {Geology}.

Cambrian \Cam"bri*an\, n.
   1. A native of Cambria or Wales.

   2. (Geol.) The Cambrian formation.

Source : WordNet®

Cambrian
     adj : of or relating to or characteristic of Wales or its people
           or their language; "the Welsh coast"; "Welsh syntax"
           [syn: {Welsh}]
     n 1: from 544 million to about 500 million years ago; marine
          invertebrates [syn: {Cambrian period}]
     2: a native or resident of Wales [syn: {Welshman}, {Welsh}]