hy·dro·log·ic \|hīdrə|läjik\adjective orhy·dro·log·i·cal\-jə̇kəl\ Etymology:hydrologic International Scientific Vocabulary hydrology + -ic; hydrological from New Latin hydrologia hydrology + English -ical : of or relating to hydrology • hy·dro·log·i·cal·ly\-jə̇k(ə)lē\adverb