| a chattering or flighty, light-headed person. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| hydrothermal (hī'drə-thûr'məl) Pronunciation Key
Relating to or produced by hot water, especially water heated underground by the Earth's internal heat. ◇ Hydrothermal energy is power that is generated using the Earth's hot water. |