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QCD

abbr

Definition of QCD

quantum chromodynamics

Learn More About QCD

Britannica.com: Encyclopedia article about "QCD"

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QCD

QCD

Definition of QCD

Learn More About QCD

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QCD

QCD

Definition of QCD

Learn More About QCD

Browse

Seen & Heard

Test Your Vocabulary

Name That Thing

True or False?

Join Us on FB & Twitter

Get Our Free Apps

The Merriam-Webster

Unabridged Dictionary

Learning English?

We can help.

Our Dictionary,On Your Devices

Visit Our Store

Join Us

Bookstore: Digital and Print

Other Merriam-Webster Dictionaries

Our Dictionary,
On Your Devices