CAS
n. countable B2 Upper Intermediate US //ˈkæs// cas
n. a short name for a person or thing, used to save time or space. You see this in news headlines, text messages, and on signs.
n. a shortened form of a word or phrase, typically formed from initial letters and pronounced as a single word. Distinct from an initialism, which is pronounced letter by letter.
She checked her email on the CAS before boarding the flight.
Last updated May 4, 2026