What term refers to a medication that is capable of being injected and must be sterile?

The term that describes a medication capable of being injected and requiring sterility is "injectable medication." This includes any form of medication that is prepared for administration via a syringe or other means, directly into a patient's body. Injectable medications must be manufactured and handled under strict sterile conditions to eliminate the risk of contamination, which could lead to serious infections or complications in patients.

Other terms provided do not specifically denote the requirement for injection and sterility as precisely as "injectable medication" does. For instance, a saline solution refers to a specific sterile liquid often used as a diluent or for hydration but does not encompass the broader category of medications. Aqueous preparation refers to solutions where water is the solvent, but this description is not exclusive to injectable forms and does not inherently imply that the preparation is suitable for injection. Fine dust, on the other hand, does not pertain to any medication format and is irrelevant in this context. Thus, "injectable medication" is the most accurate descriptor for what is being asked.