n. [ Ar. al-ghūl destruction, calamity, fr. ghāla to take suddenly, destroy. ] (Astron.) A fixed star, in Medusa's head, in the constellation Perseus, remarkable for its periodic variation in brightness. [ 1913 Webster ]
a. Of or pertaining to algology;
n. One learned about algæ; a student of algology. [ 1913 Webster ]
n. [ L. alga seaweed + -logy. ] (Bot.) The study or science of algæ or seaweeds. [ 1913 Webster ]