The Collaborative International Dictionary of English v.0.48:

Encyclopedic \En*cy`clo*ped"ic\, Encyclopedical
\En*cy`clo*ped"ic*al\, a. [Cf. F. encyclop['e]dique.]
   Pertaining to, or of the nature of, an encyclopedia; broad in
   scope or content; embracing a wide range of subjects; as, a
   person having encyclopedic knowledge of a subject. [Also
   spelled encyclopaedic.]
   [1913 Webster + WordNet 1.5]

WordNet (r) 3.0 (2006):

encyclopedic
    adj 1: broad in scope or content; "encyclopedic knowledge" [syn:
           encyclopedic, encyclopaedic]

Moby Thesaurus II by Grady Ward, 1.0:

46 Moby Thesaurus words for "encyclopedic":
   abstruse, across-the-board, all-comprehensive, all-embracing,
   all-inclusive, blanket, broad, civilized, compendious, complete,
   comprehensive, cultivated, cultured, deep, discursive, educated,
   erudite, exhaustive, extensive, general, global, inclusive,
   learned, lettered, literate, omnibus, over-all, panoramic,
   pansophic, polyhistoric, polymath, polymathic, profound, scholarly,
   scholastic, studious, sweeping, synoptic, thorough, total,
   universal, whole, wide-ranging, wise, without exception,
   without omission