English Dictionary

rollback

noun

A return to a prior state by undoing some operation, especially of policy or price changes. / A withdrawal of military forces.

The rollback of the new policy caused a lot of confusion.

意味（1）

A return to a prior state by undoing some operation, especially of policy or price changes.

The mining industry also had a hand in two other rollbacks. One was a decision to withdraw a Clinton rule that reduced by 80 percent the permissible standard for arsenic in drinking water.

意味（2）

A withdrawal of military forces.

意味（3）

(databases) An operation which returns a database, or group of records in a database, to a previous state (normally to the previous commit point).

意味（4）

The situation where a rollercoaster fails to reach the top of a hill and instead rolls backward.

意味（5）

(informal, automotive) A form of flatbed truck adapted or designed specifically as a tow truck or for transporting other vehicles.

意味（6）

(political science) The strategy of forcing a change in the major policies of a state, usually by replacing its ruling regime, or by totally annihilating an enemy's armed forces and occupying the country, as was done in World War II to Italy, Germany, and Japan.

During the 1990s the Pope, who played such a central role in the rollback of communism, was one of the few international figures who could be heard speaking out against the new capitalist order.

意味（7）

(aviation) An uncommanded reduction in the thrust of a jet engine.

The data was examined with respect to oil pressure. This showed that both the left and right engines' oil pressure generally follow each other until the start of the final acceleration, which resulted in first the right and then the left engines rolling back. The left engine oil pressure rose, as expected, as the engine accelerated: the right engine pressure, however, started to decrease, even though the engine was also accelerating prior to its rollback. Whilst, this observation, on the right engine, was based on only a few data points, it can be inferred that this was due to an oil temperature increase at, or close to, the start of the final acceleration. However, the loss of QAR data so close to the left engine rollback meant that it was not possible to draw a similar conclusion for the left engine.