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.
Several sources claim that most arsenic salts are tasteless, but may change the flavor of a food they contaminate (bitterness is often reported). One symptom of arsenic poisoning (like other metal poisonings) is a metallic taste in the mouth. Arsenic Poisoning. Views Â· View Upvotes.