IPA: /sɪŋˈkrɒnəsli/
KK: /sɪŋˈkrɒnəsli/
In a way that happens at the same time or in a coordinated manner.
The dancers moved synchronously, creating a beautiful visual effect.
Synchronously → It is formed from "syn-" (meaning together) and "chronos" (meaning time) and the suffix "-ously" (meaning in a manner). The word "synchronously" means occurring at the same time or in a coordinated manner.
Think of events happening 'together' ('syn-') in 'time' ('chronos') — that's why synchronously means they occur at the same time.