simultaneous
adjective
[ ˌsɪm(ə)lˈteɪnɪəs ]
• occurring, operating, or done at the same time.
• "a simultaneous withdrawal of troops"
Similar:
concurrent,
happening at the same time,
done at the same time,
contemporaneous,
concomitant,
coinciding,
coincident,
synchronous,
synchronized,
synchronic,
coexistent,
parallel,
side by side,
Origin:
mid 17th century: based on Latin simul ‘at the same time’, probably influenced by late Latin momentaneus .
