The Collaborative International Dictionary of English v.0.48:

Promethean \Pro*me"the*an\, a. [L. Prometh?us: cf. F.
   prom['e]th['e]en.]
   [1913 Webster]
   1. Of or pertaining to Prometheus. See Prometheus.
      "Promethean fire." --Shak.
      [1913 Webster]

   2. Having a life-giving quality; inspiring.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Promethean \Pro*me"the*an\, n. (Old Chem.)
      (a) An apparatus for automatic ignition.
      (b) A kind of lucifer match.
          [1913 Webster]