anodine
Anodine is a term that appears in several historical or informal contexts and is not widely used as a current scientific or medical designation. In modern English, the standard term for what this word sometimes refers to is anodyne, which denotes something that relieves pain or an analgesic. Anodine may be encountered as a variant spelling in older texts or as a misprint, but it does not correspond to a single, specific compound in contemporary pharmacology.
In historical pharmacology, anodine has occasionally appeared as a generic label for mild analgesics or soothing
The etymology of anodine traces to the same roots as anodyne, from Greek elements meaning “without pain.”