Search Result for "observational": 
Wordnet 3.0

ADJECTIVE (1)

1. relying on observation or experiment;
- Example: "experimental results that supported the hypothesis"
[syn: experimental, data-based, observational]



The Collaborative International Dictionary of English v.0.48:

Observational \Ob`ser*va"tion*al\, a.
   Of or pertaining to observation; consisting of, or
   containing, observations. --Chalmers.
   [1913 Webster]


WordNet (r) 3.0 (2006):

observational
    adj 1: relying on observation or experiment; "experimental
           results that supported the hypothesis" [syn:
           experimental, data-based, observational]