13-Letter Words Containing: E,T,H,A,N,O,L

• 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.

• An evolutionary trend in which the neural and sense organs become centralized at one end (the head) of an animal.

• The redistribution of blood flow from the base of the lung towards the upper lobe vessels as a consequence of pulmonary venous hypertension, usually described on a chest radiograph.

• an antifungal agent and anthelmintic

• sedative-hypnotic drug (trade name Quaalude) that is a drug of abuse

• of or relating to the craft of making fireworks