side effect

noun

An unintended consequence of any action in addition to the intended consequence of that action.

The medication may cause some side effects.

意味（1）

An unintended consequence of any action in addition to the intended consequence of that action.

意味（2）

(medicine) An adverse effect, an unintended consequence of a drug or therapy; usually not a beneficial effect.

意味（3）

(programming) A change in state caused by a function call.

The Eiffel programming language is somewhat purist in insisting that functions have no side effects.