You are probably going for 'operational definition'.
controlled
An operational definition.
Operational definition
operational definition
operational definition
condition that changes in response to the manipulated variable in an experiment.
An operational definition.
operational definition
Operational definition
operational definition
operational definition
operational definition
describes how to measure a variable or define a term. right out of my science book
operational definition
A ________________ is a statement that describes how to measure a particular variable or define a particular term.
False
Declaration is a promise: 'I will define (or has defined) this variable/function somewhere else'.
A series of marks used to define and record dances