1 E366 Potassium fumarate Potassium fumarate is the potassium salt of fumaric acid, E297, and is used as an acidity regulator in food. 2  Journal Articles and References E367 Calcium fumarate Calcium fumarate is the calcium salt of fumaric acid, E297, and is used as an acidity regulator in food. E365 Sodium fumarate Sodium fumarate is the sodium salt of fumaric acid, E297, and is used as an acidity regulator in food. 2  Journal Articles and References E366 Potassium fumarate Potassium fumarate is the potassium salt of fumaric acid, E297, and is used as an acidity regulator in food.
indolent - (of tumors, e.g.) slow to heal or develop and usually painless; an indolent ulcer; leprosy is an indolent infectious disease. pathology - the branch of medical science that studies the causes and nature and effects of diseases. inactive - (pathology) not progressing or increasing; or progressing slowly.
The noun indolence means  a habit of laziness, especially when avoiding work. In the 1600s, indolence was mostly used to mean insensitivity to pain, from the Latin indolentia, freedom from pain.. About 100 years later, indolence came to have its current meaning, possibly because of the phrase taking pains, which means being careful..