<kantian ethics, categorical imperative, metaphysics> a command that applies, not unconditionally, but only under certain conditions, or given certain purposes. e.g., "If you want to see a good movie rent The Big Lebowski": the command, here, to rent The Big Lebowski applies only on the condition that you want to see a good movie. Similarly, the command to change your oil frequently applies only if you want your car to last; the command to look both ways before crossing only applies if you seek a safe crossing; etc. According to Kant, nonmoral commandments are all of this hypothetical sort. Compare: categorical imperative.
Try this search on OneLook / Google