What does nonconcurrent mean?
Nonconcurrent describes events, processes, or activities that do not happen at the same time. If two tasks are nonconcurrent, one may begin or finish before the other begins, or they may be deliberately staggered to avoid overlap. The word is especially useful in technical and formal contexts such as database management, industrial planning, project scheduling, and legal or administrative procedures, where overlapping operations may create conflicts or hazards. It is more exact than simply saying that two things are “separate,” because that word focuses more on their distinctness than on the timing of their occurrence. Nonconcurrent is also useful when discussing activities that could technically happen simultaneously but have been arranged in sequence. Its contrastive form, concurrent, refers to simultaneous occurrence or agreement. Overall, the word precisely identifies a difference in timing without implying that the events are necessarily related or opposed.
adjectiveNot occurring or happening at the same time; sequential rather than simultaneous.
- Not happening at the same time; occurring separately or in sequence.
"The two teams were given nonconcurrent schedules, so they never had to compete for the same facility."
"The database prevents nonconcurrent updates to the same record."
"Because the workshops are nonconcurrent, participants can attend all three sessions."
A nonconcurrent schedule keeps every event moving in sequence, turning “one thing at a time” into a formal principle.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does nonconcurrent come from?
The word combines the English prefix non-, meaning “not,” with concurrent, which derives from Latin concurrere, “to run together.” The Latin verb was formed from con-, meaning “together,” and currere, “to run.” In English, concurrent originally developed the meaning of happening at the same time or agreeing, and nonconcurrent was formed later to express the opposite idea.
How nonconcurrent is actually used
Most common in formal, technical, or organizational contexts, especially in computing, engineering, law, and scheduling. It is more precise than saying that something is “not concurrent,” especially when events are arranged sequentially.
Easily confused with nonconcurrent
Concurrent events happen at the same time, whereas nonconcurrent events occur at different times.