WordReference Random House Unabridged Dictionary of American English © 2026
phy•col•o•gy
(fī kol′ə jē),USA pronunciation n.
phy•co•log•i•cal
(fī′kə loj′i kəl),USA pronunciation adj.
phy•col′o•gist, n.
- Botanythe branch of botany dealing with algae.
- 1875–80; phyco- + -logy