Source : Webster's Revised Unabridged Dictionary (1913)

Prosaic \Pro*sa"ic\, Prosaical \Pro*sa"ic*al\, a. [L. prosaius,
   from prosa prose: cf. F,. prosa["i]que. See {Prose}.]
   1. Of or pertaining to prose; resembling prose; in the form
      of prose; unpoetical; writing or using prose; as, a
      prosaic composition. --Cudworth.

   2. Dull; uninteresting; commonplace; unimaginative; prosy;
      as, a prosaic person. --Ed. Rev. -- {Pro*sa"ic*al*ly},
      adv. -- {Pro*sa"ic*al*ness}, n.

Source : WordNet®

prosaic
     adj 1: not fanciful or imaginative; "local guides describe the
            history of various places in matter-of-fact tones"; "a
            prosaic and unimaginative essay" [syn: {matter-of-fact}]
     2: lacking wit or imagination; "a pedestrian movie plot" [syn:
        {pedestrian}, {prosy}, {earthbound}]
     3: not challenging; dull and lacking excitement; "an
        unglamorous job greasing engines" [syn: {commonplace}, {humdrum},
         {unglamorous}, {unglamourous}]