That operates to produce an effect.
Any of a class of behaviors that produce consequences by operating (i.e., acting) upon the environment.
An operative person or thing.
Being likely to be effective and applicable to a real situation; able to be put to use.
Light fixtures used for set lighting and seen in the frame of a shot as part of the scenery.
Of a prop: having some degree of functionality, rather than being a mere imitation.
Of a person, having skills or knowledge that are practical.
Relating to, or based on, practice or action rather than theory or hypothesis.
A prop that has some degree of functionality, rather than being a mere imitation.
A light fixture used for set lighting and seen in the frame of a shot as part of the scenery.
A part of an exam or series of exams in which the candidate has to demonstrate their practical ability
Laboratory experiment, test or investigation