13-Letter Words Containing: HE

• to believe especially on uncertain or tentative grounds

• a mildly narcotic analgesic drug (trade name Darvon) related to methadone but less addictive

• Any of various typically yellow-brown dinoflagellates (originally grouped as genus Zooxanthella) now assigned to the genera Symbiodinium and Amphidinium, notably found in coral reefs.

• the branch of psychiatry concerned with psychological methods

• the treatment of mental or emotional problems by psychological means

• the bright red hemoglobin that is a combination of hemoglobin and oxygen from the lungs

• surgical interruption of a nerve pathway in the sympathetic nervous system

• a compound used primarily in veterinary medicine to rid farm animals of internal parasites

• To describe in terms of a mathematical equation.