Definition

A term used to describe the speed of an object in relation to the speed of sound, often represented by a number.

Example

The aircraft flew at a speed of Mach 2, which is twice the speed of sound.

Conversation

Did you know that some planes can fly at over Mach 2?

That's crazy! I can't even imagine how fast that is.

Yeah, it’s like twice the speed of sound!

I guess that's why pilots need special training for Mach speeds.

Synonyms & Antonyms

Root Explanation

The word 'mach' originates from the German word 'Mach' (meaning power or force), which is derived from the verb 'machen' (meaning to make or do). In English, 'mach' is often used in the context of speed, particularly in aviation, referring to the ratio of the speed of an object to the speed of sound.

Memory Tip

Think of the German word for power ('Mach') to remember that 'mach' relates to speed and force, especially in aviation.

Visually Confused Words