[hahy-drol-uh-jee] 
| 1. | the science dealing with the occurrence, circulation, distribution, and properties of the waters of the earth and its atmosphere. |
| 2. | hydrogeology; geohydrology. |
[hahy-droh-jee-ol-uh-jee] | the science dealing with the occurrence and distribution of underground water. |
[hahy-druh-jee-uh-loj-i-kuh
l] , hy⋅dro⋅ge⋅o⋅log⋅ic, adjective | hy·drol·o·gy (hī-drŏl'ə-jē) n. The scientific study of the properties, distribution, and effects of water on the earth's surface, in the soil and underlying rocks, and in the atmosphere. hy'dro·log'ic (-drə-lŏj'ĭk), hy'dro·log'i·cal adj., hy'dro·log'i·cal·ly adv., hy·drol'o·gist n. |
| hydrogeology (hī'drō-jē-ŏl'ə-jē) Pronunciation Key
The scientific study of the occurrence, distribution, and effects of groundwater. |
| hydrology (hī-drŏl'ə-jē) Pronunciation Key
The scientific study of the properties, distribution, and effects of water as a liquid, solid, or gas on the Earth's surface, in the soil and underlying rocks, and in the atmosphere. |