simultaneity

About 0.63 uses per million words.

Meaning

1. noun The quality or state of being simultaneous; simultaneousness.
2. 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.

Similar words

synchronization simultaneum concurrentness synchronicity coinstantaneousness cotemporaneousness synchronism synchrony synchroneity contemporaneity

Often followed by

of and is in bias between or with that