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simultaneous JUST WRITTEN FOR YOU

/sɪm.əlˈteɪ̯n.i.əs/ · sim·ul·ta·ne·ous
adjective
  1. Happening, existing, or done at the same moment. The fireworks and the music were launched simultaneously, creating a dazzling spectacle.
  2. (of a set of equations) To be solved for the same values of the variables. The chemist wrote a system of simultaneous equations to determine the concentrations of the reactants.
Did you know? The term ‘simultaneous equations’ was popularized in the 19th century as algebraic methods advanced, allowing mathematicians to solve multiple unknowns in a single step.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Jul 15, 2026