
1) Contemporaneity
Found on
https://www.crosswordclues.com/clue/isochrony

Isochrony is the postulated rhythmic division of time into equal portions by a language. Rhythm is an aspect of prosody, others being intonation, stress and tempo of speech. Three alternative ways in which a language can divide time are postulated: The idea as such was first expressed by Kenneth L. Pike in 1945, though the concept of language natu...
Found on
http://en.wikipedia.org/wiki/Isochrony

isochronous, isochronism, isochrony 1. Taking place in or occupying equal times; equal in metrical length; equal in duration, or in intervals of occurrence, as the vibrations of a pendulum; characterized by or relating to vibrations or motions of equal duration; vibrating uniformly, as a pendulum. 2. Taking place (vibrating, etc.) in the same time,...
Found on
http://www.wordinfo.info/words/index/info/view_unit/2781/6

A sequence of events is called isochronous if the time separating each pair of successive events is strictly equal. The absence of isochrony is called anisochrony. See also: Anisochrony.
Found on
https://www.encyclo.co.uk/local/20687

the fact or state of occurrence at the same time; contemporaneity.
Found on
https://www.infoplease.com/dictionary/isochrony
No exact match found.