Definition of "simultaneity" []

• The quality or state of being simultaneous; simultaneousness. (noun)
• 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. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

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