The meaning of SIMULTANEOUS is existing or occurring at the same time : exactly coincident. How to use simultaneous in a sentence. Synonym Discussion of Simultaneous.

Simultaneous (adj.): Occurring, operating, or done at the same time. The term “ simultaneous ” originates from the early 17th century, deriving from the medieval Latin “ simultaneus,” which comes …

SIMULTANEOUS definition: 1. happening or being done at exactly the same time: 2. happening or being done at exactly the…. Learn more.

WordSense Dictionary: simultaneous - spelling, hyphenation, synonyms, translations, meanings & definitions.

SIMULTANEOUS definition: existing, occurring, or operating at the same time; concurrent: simultaneous translation. See examples of simultaneous used in a sentence.

Define simultaneous. simultaneous synonyms, simultaneous pronunciation, simultaneous translation, English dictionary definition of simultaneous. adj. 1. Happening, existing, or done at the same time.

WordReference Random House Unabridged Dictionary of American English © 2025 si•mul•ta•ne•ous (sī′məl tā′ nē əs, sim′əl-), adj. existing, occurring, or operating at the same time; concurrent: …

The adjective simultaneous describes something that is done at the same time as something else. "The teachers all assigned simultaneous projects to the students that week. The kids were grumbling and …

Things which are simultaneous happen or exist at the same time. ...the simultaneous release of the book and the film.

Definition of simultaneous adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.