Origin of observational
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for observational
When a scientific truth arises, it is so because of observational and experimental consensus.
Meanwhile, some of the observational studies don't even show any benefit from insurance.Study: Giving People Government Health Insurance May Not Make them Any Healthier
May 1, 2013
In both stories, the detached, observational voice calmly belies the impossibility of ever keeping a job ‘strictly business.’Great Weekend Reads
The Daily Beast
July 3, 2011
All the lurking about unnoticed has allowed her to sharpen her observational skills.10 Smart YA Reads
September 16, 2010
He was hardly a practical astronomer in the observational sense.Kepler
Walter W. Bryant
In twelve months observational astronomy had made such a bound as it has never made before or since.Pioneers of Science
These are the palmiest days in the eventful history of physical and observational astronomy.
The observational method applied to consciousness gives us the science of psychology.
This first and oldest branch is known as "observational," or "practical astronomy."A Popular History of Astronomy During the Nineteenth Century
Agnes M. (Agnes Mary) Clerke