- existing, occurring, or operating at the same time; concurrent: simultaneous movements; simultaneous translation.
Origin of simultaneous
SynonymsSee more synonyms for simultaneous on Thesaurus.com
Examples from the Web for simultaneous
The portal will have a system of simultaneous translation in three languages including English.Brazil’s World Cup Is An Expensive, Exploitative Nightmare
May 30, 2014
This week, investors were, um, charged up, by two simultaneous bold strokes.Tesla Looks Like a Bubble, Will It Pop?
March 1, 2014
As of this month, the website can handle 50,000 simultaneous users, for a total limit of 800,000 users per day.They Just Don't Care if Healthcare.Gov Works or Not
December 2, 2013
The level of detail is immense—the narrative skips between seven simultaneous biographies—and yet the pace is break-neck.Halevi's 'Like Dreamers' Is the Big Book On Israel We've Been Waiting For
October 8, 2013
So the secret and simultaneous nature of the talks should mitigate this first concern.How Abbas Can Recognize A 'Jewish State' While Preserving Palestinian Rights
August 14, 2013
The movement, like the feeling, had been simultaneous and general.The Last of the Mohicans
James Fenimore Cooper
Simultaneous engrams are associated in every direction with the same intensity.The Sexual Question
A loud cheer was followed by a simultaneous mounting of the ladders.The Pirate and The Three Cutters
For simultaneous with their growth in man a growth of language must be supposed.Theaetetus
Hat, cigar, and boots dropped to a simultaneous disappearance.The Trimming of Goosie
- occurring, existing, or operating at the same time; concurrent
- chess a display in which one player plays a number of opponents at once, walking from board to boardSometimes shortened to: simul
Word Origin and History for simultaneous
1650s, from Medieval Latin simultaneus, perhaps from simultim "at the same time," extended from Latin simul "at the same time" (see similar (adj.)), or from simul with ending abstracted from Late Latin spontaneus, where the -t- is organic. Related: Simultaneously.