from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The branch of physics that deals with heat and electricity.
from the GNU version of the Collaborative International Dictionary of English
- n. That branch of physics which treats of heat and electricity.
from The Century Dictionary and Cyclopedia
- n. That branch of natural philosophy which investigates the laws and describes the phenomena of heat and electricity.
Ancient Greek, meaning thunder and lightning. (Wiktionary)