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superluminal

American  
[soo-per-loo-muh-nl] / ˌsu pərˈlu mə nl /

adjective

Astronomy.
  1. appearing to travel faster than the speed of light.


superluminal British  
/ ˌsuːpəˈluːmɪnəl /

adjective

  1. physics of or relating to a speed or velocity exceeding the speed of light

"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

Etymology

Origin of superluminal

First recorded in 1955–60; super- + Latin lūmin-, stem of lūmen “light, rays of light, radiance” + -al 1

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.

Importantly, giving it up doesn’t cause a theory to fall afoul of Einstein’s theories of relativity, much like physicists have argued that Bell nonlocality doesn’t require superluminal or nonlocal causal influences but merely nonseparable states.

From Scientific American • May 22, 2023

The news cycle has sped up to superluminal velocity.

From Washington Post • May 10, 2017

“A group from the H.W. Wills Physics Laboratory in Bristol and the Indian Institute of Technology wondered, “‘Can apparent superluminal neutrino speeds be explained as a quantum weak measurement?’

From Scientific American • Feb. 1, 2014

After eons of superluminal ecstasy, I decided that I wanted not pleasure but knowledge.

From Scientific American • Nov. 27, 2012

This was, of course, disturbing to Einstein, whose theory of relativity prohibited any such superluminal propagation.

From Scientific American • Jan. 30, 2012