thermosiphon

[ thur-muh-sahy-fuh n ]
/ ˌθɜr məˈsaɪ fən /

noun

an arrangement of siphon tubes that enables water in a heating apparatus to circulate by means of convection.

Origin of thermosiphon

First recorded in 1825–35; thermo- + siphon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for thermosiphon

thermosiphon

/ (ˌθɜːməʊˈsaɪfən) /

noun

a system in which a coolant is circulated by convection caused by a difference in density between the hot and cold portions of the liquid

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012