Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of or relating to a heating or cooling system that transfers heat by circulating a fluid through a closed system of pipes.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Refers to heating systems which involve circulating hot water or steam.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

hydr(o)- + -onic (as in electronic).

from Wiktionary, Creative Commons Attribution/Share-Alike License

blend of hydro- and -onic

Examples

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.