"experimental operation" is a correct and usable term in written English.
You can use it when referring to an operation or procedure that is part of a larger experiment. For example: "The experimental operation was successful in discovering a potential new cancer treatment."
L.H.F. and Y.P. participated in data collection and experimental operation.
While Barnard succumbed to celebrity, Shumway and Lower turned an experimental operation into a routine procedure.
A medical circus followed as surgeons elsewhere tried the experimental operation with little success.
37. Experimental Operation of a Hadamard Spectrometer, John A. Decker, Jr. and Martin Harwit, Appl.
In 1993, he received the heart and liver of a murder victim in an experimental operation that took 15 hours at the University of Pittsburgh Medical Center.
As a last resort, his doctor handed him a letter describing an experimental operation, intestinal transplant, being performed at Mount Sinai Hospital in Manhattan.
Investigators produce them by performing measuring and other experimental operations and assigning symbols to perceptible results according to pre-established operational definitions (Duhem 1906, 19).
Experimental operations on her eardrums made little difference, but she memorised enough in lessons to get five O-levels.
She was born in Denmark as Einar Mogens Wegener and underwent a series of then experimental operations in Berlin in 1930-31.
However, the student should not perform any experimental operations unless another trained laboratory staff member is present.
The isolated Red Sea port of Eilat gets drinking water from an IDE plant, and there are smaller experimental operations scattered across the country.
