ENGLISH
REFERENCE

ACS

n. countable
C2 Proficiency acs

n. a system in a car or machine that helps it stay stable and safe while moving. It uses sensors to monitor how the vehicle is behaving and makes small adjustments automatically.

n. an automated mechanism designed to maintain the stability or safety of a mechanical system, such as a vehicle or aircraft. Often refers to Active Control Systems or Advanced Control Systems in engineering contexts.


SIMPLE

The car's ACS helps prevent skidding on wet roads.

CONTEXTUAL

Engineers integrated a new ACS into the drone to ensure it remains level during high-speed maneuvers in turbulent winds.

COMPLEX

The implementation of a sophisticated ACS allows the aircraft to compensate for structural damage in real-time, maintaining flight envelopes that would otherwise be impossible for a human pilot to manage.

Synonyms
Usage

Often used as an acronym in technical documentation; the specific meaning depends on whether the context is automotive, aerospace, or medical.

© 2026 English Reference