IPA: /haɪˈdrɒlədʒɪkəl/
KK: /haɪˈdrɑlədʒɪkəl/
Related to the study of water and its movement, distribution, and properties in the environment.
The hydrological cycle describes how water moves through the atmosphere, land, and oceans.
Hydrological → It is formed from "hydro-" (from Greek "hudor", meaning water) and "-logical" (from Greek "logia", meaning study or science). The word refers to the study of water and its properties, distribution, and effects.
Think of 'water' ('hydro-') being studied ('-logical') — that's what hydrological means.