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Definitions

backbone

[bak-bohn] / ˈbækˌboʊn /


NOUN
spinal column of vertebrate
Synonyms


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.

Nvidia’s graphics processing units have been the backbone of AI development thus far, but central processing units are having a moment.

From MarketWatch • Mar. 25, 2026

Fannie and Freddie form the backbone of the U.S. housing finance system.

From Barron's • Mar. 19, 2026

Supplements went from a means of treating diseases caused by nutritional deficiencies in the 1900s to lifestyle products that are now the backbone of a $70 billion industry.

From The Wall Street Journal • Mar. 18, 2026

These bonds create the backbone of countless substances including fuels, plastics and complex biological molecules.

From Science Daily • Mar. 14, 2026

I could feel his backbone and his ribs, all tied together by stringy muscles.

From "Hattie Big Sky" by Kirby Larson