1. Compounds capable of relieving pain without the loss of consciousness or without producing anesthesia: Dr. Lawson, the dentist, injected Randal with a powerful analgesic so she could drill the decayed tooth without causing him any pain.
2. Those drugs that primarily relieve pain without blocking nerve-impulse conduction or markedly altering sensory functions: The new analgesic which Dr. Jones used was exceptional in terms of relieving or reducing Desiree's severe pain.

Regarding an agent that alleviates pain without causing loss of consciousness; antalgic: An analgesic medication is able to sooth or eliminate pain while a person is conscious.

An analgetic compound is capable of producing analgesia, i.e., one that relieves pain by altering perception of pain stimuli without producing anesthesia, or loss of consciousness.