The Collaborative International Dictionary of English v.0.48:

archeological \archeological\ adj.
   1. of or pertaining to archeology. archeological excavations
      [WordNet 1.5]

   2. related to or dealing with or devoted to archaeology. an
      archeological dig

   Syn: archaeological, archaeologic, archeologic
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Archeology \Ar`che*ol"o*gy\, n., Archeological
\Ar`che*o*log`ic*al\, a.
   the branch of anthropology that studies prehistoric people
   and their cultures. Same as Arch[ae]ology, etc.

   Syn: archaeology, Arch[ae]ology
        [1913 Webster + WordNet 1.5]

WordNet (r) 3.0 (2006):

archeological
    adj 1: related to or dealing with or devoted to archaeology; "an
           archaeological dig"; "a dramatic archaeological
           discovery" [syn: archaeological, archeological,
           archaeologic, archeologic]