reflux condenser(n = noun.artifact) - condenser such that vapor over a boiling liquid is condensed and flows back into the vessel to prevent its contents from boiling dry;
is a kind of condenser

abbe condenser, bypass condenser, condenser, condenser microphone, electrical condenser, electrolytic condenser, esophageal reflux, flux and reflux, gastroesophageal reflux, hepatojugular reflux, liebig condenser, oesophageal reflux, optical condenser, reflux, ureterorenal reflux, vesicoureteral reflux