| hydrometer |
an instrument, usu. a sealed glass tube containing a graduated scale and weighted at one end, used to measure the specific gravity of liquids. |
| hydropathy |
the treatment of disease by the use of water, as by drinking or external application. (Cf. hydrotherapy.) |
| hydrophilic |
of or pertaining to a substance that has a strong affinity for water. |
| hydrophobia |
abnormal fear of water. [2 definitions] |
| hydrophobic |
having a fear of water. [2 definitions] |
| hydrophyte |
a plant that grows in water alone or in esp. wet ground. |
| hydroplane |
a light, fast motorboat that at high speeds skims the water with only the rear part of the hull touching the surface. [5 definitions] |
| hydroponics |
(used with a sing. verb) the growing of plants in nutrient solutions rather than in soil. |
| hydropower |
electrical energy from hydroelectric generating plants. |
| hydrosphere |
collectively, all bodies and forms of water on or around the earth's surface, including vapor and clouds in the atmosphere. |
| hydrostatics |
(used with a sing. verb) the scientific study of liquids at rest, esp. with regard to pressure and equilibrium. |
| hydrotherapeutics |
(used with a sing. verb) the practice or process of hydrotherapy. |
| hydrotherapy |
the treatment of disease through the internal or external application of water. |
| hydrotropism |
movement or growth, as by an organism or plant root, either toward or away from water. |
| hydrous |
containing water or its elements, esp. in a chemical union. |
| hydroxide |
a chemical compound that contains ions made up of one atom of hydrogen and one atom of oxygen. |
| hydroxyapatite |
a calcium mineral that is an important component of bone and dental enamel in humans and other animals. |
| hydroxychloroquine |
an anti-inflammatory drug used in treating, malaria, rheumatoid arthritis, and lupus erythematosus |
| hydroxyl |
of a chemical group containing one atom each of hydrogen and oxygen, found in some bases, acids, and alcohols. |
| hydrozoan |
of or relating to any member of a group of water animals having a single internal cavity and tentacles on the oral end. [2 definitions] |
| hyena |
any of several carnivorous, mostly nocturnal, doglike mammals of Africa and Asia that have strong jaws and fairly small hindquarters. |