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qubit

British  
/ ˈkjuːbɪt /

noun

  1. computing a quantum bit

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

qubit Scientific  
/ kyo̅o̅bĭt′ /

Etymology

Origin of qubit

C20: from qu ( antum ) + bit 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.

Rather than targeting raw qubit count, the company has shifted its focus to fidelity-driven scaling, ensuring its hardware reaches specific performance benchmarks before increasing system size.

From Barron's • May 11, 2026

Entanglement allows qubits to influence each other regardless of distance, while superposition enables a qubit to exist in multiple states at once until measured.

From Science Daily • Apr. 17, 2026

In fact, its companies represent between them the full range of qubit types – all the routes physicists are hoping will lead to the first reliable and ultra-powerful quantum computer.

From BBC • Apr. 13, 2026

Their model included realistic conditions, where each qubit experiences noise after every step.

From Science Daily • Apr. 6, 2026

With each qubit added to a chip, the chip becomes exponentially more powerful, as qubits can talk to each other, informing each other of their state.

From The Wall Street Journal • Mar. 17, 2026

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