Simple past tense and past participle of interface.(verb)
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Use "interfaced" in a sentence
"The Perihelion Foundation (now officially an agency of the government) wasn't part of NASA, although it "interfaced" with NASA, borrowing and lending engineers and staff."
"Rigby 'interfaced' with the other city departments — the mayor's office, the DA, all the crap for which Glitsky had no use."
"… And we've interfaced with the Secret Service way in advance."