double check
noun
a simultaneous check by two pieces in which the moving of one piece to give check also results in discovering a check by another piece.
Used to describe an ongoing action or state that is currently taking place in the immediate present.
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McKinley adds that concurrent studies in animals are double-checking the effect’s mechanism, and he is also preparing to submit research on vagus nerve stimulation to boost learning rates and retention.
From Scientific American ● Jun. 10, 2021