parameterize:

to take something that’s a constant and make it a variable.

Example (Programming):

# "hardcoded"
def plus_three(a: int) -> int:
    some_number = 3
    return a + some_number
 
# "parameterized"
def plus_some_number(a: int, some_number: int) -> int:
    return a + some_number

This is a coding example, but this idea applies to non-programmed research methods, too.

operationalize:

to take something abstract and make it concrete

operationalization: the way you make it concrete