What is indicated as a method of ingestion for dissociative anesthetics?

Dissociative anesthetics, such as ketamine, can have various methods of administration, but transdermal application is particularly notable for certain substances within this category. Transdermal methods involve delivering the drug directly through the skin, which allows for controlled release into the bloodstream. This route can provide an extended effect, making it effective for both anesthesia and pain management.

While other methods of ingestion like injection and inhalation exist, they are not typically associated with the dissociative anesthetics as prominently as transdermal. For instance, inhalation is more commonly related to substances like nitrous oxide. Therefore, transdermal administration stands out in the context of dissociative anesthetics due to its unique effectiveness and application method, highlighting this choice as the correct answer.