1. Plural of anesthesia; the state of being unable to feel pain, typically induced by drugs before surgery.
Usage: Medical term; Countable noun when referring to multiple instances or types
2. Plural of anesthesia; drugs or techniques used to produce loss of sensation or consciousness.
Usage: Medical/pharmaceutical context

Examples

• The surgeon used different anesthesias depending on the type of procedure.
• Modern anesthesias have made surgery much safer than in the past.
• Patients may experience different side effects from various anesthesias.
• The anesthesiologist selected one of several available anesthesias for the operation.
• Local and general anesthesias serve different purposes in medical practice.