Adjusted EBITDA
Earnings before interest, taxes, depreciation and amortization, with further items removed that the company chooses to exclude. It isn't a standard accounting measure, so every company defines it a little differently.
Simple example
A company makes $10 of profit. Add back $10 of interest, taxes and depreciation and you get EBITDA of $20. Leave out another $4 of costs the company calls one-off, and it reports adjusted EBITDA of $24.