C4
Britishnoun
Etymology
Origin of C4
C20: from C(omposition) 4
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A red Seat Leon collided with a Citroen C4 Picasso, driven by Masrob Ali, at about 00:45 GMT.
From BBC • Jan. 12, 2026
The key to effective defense, experts say, lies in the C4 layer—short for command, control, computing and communication—which identifies intruders and quickly determines the best response.
From The Wall Street Journal • Oct. 18, 2025
His car, a grey-coloured Citroen C4 was found parked in the layby on the A675, near to Tockholes Road.
From BBC • Mar. 24, 2025
"Rather, the difference is on a regulatory level, which could make it easier for us in the long run to turn on more efficient C4 photosynthesis in C3 crops."
From Science Daily • Nov. 20, 2024
So even though they both add an F, a C4 suspension36 will sound quite different from a C1137 extended chord.
From "Understanding Basic Music Theory" by Catherine Schmidt-Jones and Russel Jones
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
