Origin of simultaneousMedieval Latin simultaneus from simultas, simultaneity from L, competition, rivalry from simul: see same
Ashley and Jack experienced a simultaneous reaction of shock while watching the season finale of their favorite TV show.
When two television shows are on different channels at the same time, this is an example of a situation where the shows are simultaneous.
- Happening, existing, or done at the same time. See Synonyms at contemporary.
- Mathematics Containing variables for which there are values that can satisfy all the equations: simultaneous equations.
Origin of simultaneousLatin simul at the same time ; see sem-1 in Indo-European roots.English -taneous (as in instantaneous )
- si′mul·ta′ne·ous·ness si′mul·ta·ne′i·ty
- The simultaneous system of two quadratic forms ai, ay, say f and 0, consists of six forms, viz.
- Heating or exposure to sunlight reduces it to the red oxide; it fires when ground with sulphur, and oxidizes ammonia to nitric acid, with the simultaneous formation of ammonium nitrate.
- If the two things are different, they are either simultaneous or in succession.
- In Transylvania, however, the common peril evoked by the Turkish incursion and a simultaneous rising of the Vlach peasantry had knit together the jarring interests of Magyars, Saxons and Szeklers, a union which, under the national hero, the voivode Janos Hunyadi, was destined for a while to turn the tide of war.
- The first chemical change suggested is an interaction between carbon dioxide and water, under the influence of light acting through chlorophyll, which leads to the simultaneous formation of formaldehyde and hydrogen peroxide.