Simple past tense and past participle of siphon.(verb)
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Use "siphoned" in a sentence
"One victim, a dentist in Florida, had nearly $400,000 siphoned from a TD Ameri trade account last December."
"The ESAS architecture does not support broader national goals, and as long as this is the case, money will continue to be siphoned from the program."
"Because no running water was available, the water to cool the PCl3 condenser was siphoned from the recycled milk jug and deposited into the waste can labeled "Hawaiian Punch"."