adjective, sourer, sourest. 1. having an acid taste, resembling that of vinegar, lemon juice, etc.; tart. 2. rendered acid or affected by fermentation; fermented. 3. producing the one of the four basic taste sensations that is not bitter, salt, or sweet. 4. characteristic of something fermented: a sour smell.
General anesthetics normally are used to produce loss of consciousness before and during surgery. However, for obstetrics (labor and delivery) or certain minor procedures, an anesthetic may be given in small amounts to relieve anxiety or pain without causing unconsciousness.
Anesthesia is a way to control pain during a surgery or procedure by using medicine called anesthetics. It can help control your breathing, blood pressure, blood flow, and heart rate and rhythm. Anesthesia may be used to: 1  Relax you.2  Block pain. 3  Make you sleepy or forgetful. 4  Make you unconscious for your surgery. Epidural and spinal anesthesia. 2  This is a shot of anesthetic near the spinal cord and the nerves that connect to it. 3  It blocks pain from an entire region of the body, such as the belly, hips, or legs. 4  General anesthesia affects your brain and the rest of your body.