Wordnet 3.0
ADJECTIVE (1)
1. 
 on this (the speaker's) side of the mountains; 
- Example: "a contest in Virginia between a cismontane and a tramontane people"
The Collaborative International Dictionary of English v.0.48:
Cismontane \Cis*mon"tane\, a. [Pref. cis- + L. mons mountain.]
   On this side of the mountains. See under Ultramontane.
   [1913 Webster]
WordNet (r) 3.0 (2006):
cismontane
    adj 1: on this (the speaker's) side of the mountains; "a contest
           in Virginia between a cismontane and a tramontane people"
           [ant: tramontane, transmontane]