simultaneous

[ sahy-muhl-tey-nee-uhs, sim-uhl- ]

adjective

1. existing, occurring, or operating at the same time; concurrent: simultaneous translation.

   simultaneous movements;

   simultaneous translation.

   Synonyms: coincident, synchronous

simultaneous

/ ˌsaɪməltəˈniːɪtɪ; ˌsɪməltəˈniːɪtɪ; ˌsaɪməlˈteɪnɪəs; ˌsɪməlˈteɪnɪəs /

adjective

1. occurring, existing, or operating at the same time; concurrent

noun

1. chess a display in which one player plays a number of opponents at once, walking from board to board Sometimes shortened tosimul

Derived Forms

• ˌsimulˈtaneousness, noun
• ˌsimulˈtaneously, adverb

Other Words From

• si·mul·ta·ne·ous·ly adverb
• si·mul·ta·ne·i·ty [sahy-m, uh, l-t, uh, -, nee, -i-tee, -, ney, -, sim-, uh, l-], si·mul·ta·ne·ous·ness noun
• non·si·mul·ta·ne·ous adjective
• un·si·mul·ta·ne·ous adjective
• un·si·mul·ta·ne·ous·ness noun

Word History and Origins

Origin of simultaneous¹

First recorded in 1650–60; from Latin simul “together” ( similar ) + (instan)taneous

Word History and Origins

Origin of simultaneous¹

C17: formed on the model of instantaneous from Latin simul at the same time, together

Example Sentences

The French sources said authorities in the Netherlands were conducting simultaneous searches, and that co-operation between the two countries had been going on for "many months".

From BBC

Each party floods into power in a state of simultaneous overconfidence in its policy mandate and panic that its hold on power will be short-lived.

From Los Angeles Times

Her playing homage to Divine for instance in drag — it's like a simultaneous connection because drag is a protest.

From Salon

The attack involved the simultaneous detonation of some 5,000 pagers distributed among Hezbollah fighters and officials across the country.

From Los Angeles Times

“Hezbollah’s specialized agencies are currently conducting a wide-ranging security and scientific investigation to determine the reasons that led to these simultaneous explosions,” the statement said.

From Los Angeles Times

Related Words

• concurrent