Definition of "ansible"

“You remember the ansible, the machine I showed you in the ship, which can speak instantly to other worlds, with no loss of years– […] ” / “An ansible would theoretically be powered by subatomic particles that have undergone quantum entanglement, which utilizes Einstein's 'spooky action at a distance', allowing the alteration of one particle to instantaneously alter the state of its paired particle. […] ”

1966, Ursula K. Le Guin, Rocannon's World, reprinted in Worlds of Exile and Illusion, Macmillan (1996), page 25

“ […] The master ansible is there, in contact with all our invasion fleet; the ships are all working, ready to fight. […] ”

1985, Orson Scott Card, Ender's Game, reprinted by Macmillan, published 2002, page 251

Ky had allotted two hours here, time to strip the news from the ansible, share it, even discuss it, but she didn’t plan to have everyone clustered and vulnerable.

2008, Elizabeth Moon, Victory Conditions, reprint by Random House, published 2009, page 39