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Adjective: observational  `ób-zur'vey-shu-nul
  1. Relying on observation or experiment
    "observational results that supported the hypothesis"
    - experimental, data-based

See also: empiric, empirical

Nearest

observable
observably
observance
observant
observantly
observation
observation dome
observation post
observation station
observation tower
observational
observator
observatory
observe
observed
observed fire
observer
observer's meridian
observing
observingly
obsess