synchronism
noun
syn·chro·nism ˈsiŋ-krə-ˌni-zəm 
ˈsin-
1
: the quality or state of being synchronous : simultaneousness
2
: chronological arrangement of historical events and personages so as to indicate coincidence or coexistence
also : a table showing such concurrences
synchronistic
ˌsiŋ-krə-ˈni-stik
adjective ˌsin-
Example Sentences
Recent Examples on the Web Synchronism colors are not blended but rather placed next to each other, just as music notes are placed one after the other to create a scale. 
Hailey Ross, idahostatesman, 16 June 2017
Hailey Ross, idahostatesman, 16 June 2017 Word History
First Known Use
1588, in the meaning defined at sense 1
synchronism
noun
as in synchrony
Synonyms & Similar Words
Relevance
- synchrony
- simultaneousness
- contemporaneousness
- coexistence
- coincidence
- coevality
- occurrence
- concurrency
- concurrence
- happening
- development
Antonyms & Near Antonyms
- asynchronism
- asynchrony