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Use "economiser" in a sentence
"The engines are named for Robert Stirling, a minister in Scotland who first applied for a patent on his "economiser" engine in 1816."
"A thought on Julie's point-I have always thought of economiser as to be thrifty - the kind of savings like with the household budget or buying less of something or at a discount, but for putting money away I think of eparganer .... there is a French savings bank called Caisse d'Epargne."
"Mais des que ce sera arranger je vais economiser 50euros et du coup je vais prendre un abonnement au net."