Built-up synonyms

Our internal electrical system works by using cells that have built up electrical gradient or energy that can be given off to other cells by direct transfer.

We'd built up a library of recorded sessions but became concerned about properly securing them.

I figured he romanticized the place, built up in his mind how beautiful it was, but he didn't.

Or maybe it was all her fault, created by bad karma she built up when she was some crazy deity in a past life she had no memory of.

Imposing columns and pillars of ice were visible everywhere—massive icicles and mounds, built up from the spraying water tapped from the piping that paralleled the penstock.