Definition, synonyms and related words
Alternative form of real-time
"The software update manual lists "realtime" as an acceptable alternative spelling for the term "real-time.""
In plain English: Realtime means something happens instantly as it occurs, with no delay at all.
"The traffic app shows us realtime updates so we can avoid congestion right now."
The word realtime is a straightforward combination of the words real and time that entered English to describe events happening immediately as they occur. It was formed by joining these two existing terms rather than evolving from an older root with a different original meaning.