Horological :: Horological (a.) Relating to a horologe, or to horology..
Horologiography :: Horologiography (n.) The art of constructing clocks or dials; horography.
Hydrometeorological :: Hydrometeorological (a.) Of or pertaining to hydrometeorology, or to rain, clouds, storms, etc..
Meteorological :: Meteorological (a.) Of or pertaining to the atmosphere and its phenomena, or to meteorology..