flatten

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flatten

To remove structural information, especially to filter something with an implicit tree structure into a simple sequence of leaves; also tends to imply mapping to flat ASCII. "This code flattens an expression with parentheses into an equivalent canonical form."
References in periodicals archive ?
He looked like winning when produced on the outside in the straight but his effort flattened out close to home, which was not surprising as he was asked to come from off a steady pace.
However, like most of O'Brien's horses yesterday, and in recent weeks, his run flattened out at the business end to leave the impression that he needed the outing.
All of the drops flattened out completely, indicating that both fluids adhere to the coating, the team reports.