say it: ahb-zur-VAY-shuh-nuhl
observational is an adjective meaning "relying on observation or experiment". It carries one recorded sense.
relying on observation or experiment
“experimental results that supported the hypothesis”
Definitions, synonyms and semantic relations for observational come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.