A brief sudden change in a normally constant quantity: a pulse of current; a pulse of radiation. b. Any of a series of intermittent occurrences characterized by a brief sudden change in a quantity.
Some pregnant women experience a metallic taste in their mouth during the early stages of pregnancy, because of the hormone changes. It's also fairly common to crave certain foods, or go off certain foods, and have a heightened sense of smell. Learn more about the signs and symptoms of pregnancy.
A metallic taste in the mouth is a fairly common problem-and usually not serious. Although you don't have actual taste buds that detect metals, the perception of the taste i â¦ s described as metallic.. A metallic taste can be due to many factors.