from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The quality or state of being simultaneous; simultaneousness.
  • n. More than one complete musical texture occurring at the same time. This first appeared in the music of Charles Ives, and is common in the music of Conlon Nancarrow, and others.

from the GNU version of the Collaborative International Dictionary of English

  • n. The quality or state of being simultaneous; simultaneousness.

from The Century Dictionary and Cyclopedia

  • n. The state or fact of being simultaneous.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. happening or existing or done at the same time


Sorry, no etymologies found.


  • Although I think the point I made about the illusion of simultaneity is obvious, here is a simple test which can be observed, and shows that the possibility of illusion cannot be ruled out.

    Backing Into an Evidentiary Standard for ID

  • The basic structural fact about simultaneity is that the effects come before the causes in such structures, or, the ground comes before the figure.

    The End of the Work Ethic

  • To demonstrate this simultaneity is by no means trivial, because it may for example happen that the product nucleus always forms in an activated state at first.

    Walther Bothe - Nobel Lecture

  • There are two concepts which I want to distinguish, and one I call simultaneity and the other instantaneousness.

    The Concept of Nature The Tarner Lectures Delivered in Trinity College, November 1919

  • Fifth, Goldblatt needs to reread Stump and Kretzmann's article on eternity, since he seems to have missed the fact that Stump and Kretzmann identify several distinct senses of the term 'simultaneity' -- despite the fact that it's the primary point of the article.

    Archive 2005-10-01

  • Canadian counterinsurgency doctrine not only echoes this theme, but fleshes it out - most notably by incorporating the idea of simultaneity:

    When the facts get in the way

  • (In general relativity, in which spacetime is curved, we need to go even further — the notion of simultaneity is not simply frame-dependent, it is completely ill-defined.)

    Synchronized time

  • It did not happen with perfect simultaneity, which is a prime reason that the economy shows a pattern of booms and busts — for a short time, the explosion of the internet actually increased demand for plain old telephone service — people got second numbers for internet connections, internet connection calls stretched out for hours and hours, placing a serious strain on the phone network (but also boosting the utilization and therefore the productivity of the old network).

    Matthew Yglesias » Inequality and the China Trade

  • Kasper's argument for the "simultaneity" of the local Church and the universal Church was an argument for a degree of local autonomy.

    The Year of two Popes

  • Already in the special theory of relativity (1905), Einstein's operational definition of the "simultaneity" of distantly separated events, whereby clocks are synchronized by sending and receiving light signals, is closely modeled on the operational definition of "mass" in Mach's Mechanics.

    Early Philosophical Interpretations of General Relativity


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  • "Don't ask," I said, snapping the Amex Platinum ... Down on the counter. A tactical simultaneity: brusque tone and class plastic. It worked, just. From "The Last Werewolf" by Glen Duncan.

    March 24, 2012

  • The special theory of relativity describes how velocities near the speed of light may effect the simultaneity of two events.

    January 27, 2007