the.com/carryover

means Something left over from a previous period that gets carried forward into the next one — a balance, a task, a feeling — still counting even though the calendar changed.

from A straightforward compound of 'carry' and 'over,' doing exactly what it says: carrying something over a boundary line. It took hold in accounting and business language, where unused budget, inventory, or losses get 'carried over' from one fiscal period to the next — a ledger term that later wandered into everyday speech for any leftover feeling or habit that survives the jump from one situation to another.