Entry 1 sense Webster, 1913 Phycology /fī-kŏlʹə-jē/ · Phy·col·o·gy · IPA /faɪˈkɑ.lə.d͡ʒi/ 01 n. The science of algae, or seaweeds; algology. 1. The science of algae, or seaweeds; algology.