Lingua-e
← Glossary

What does "nondeterministic" mean in programming?

nondeterministic is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.

Definition

Describes a system or algorithm whose outcome can vary even with the same input, due to randomness, concurrency, timing, or external state. Nondeterminism makes testing harder and is a common cause of flaky tests.

Example

"Tests that depend on the current time are nondeterministic — they may pass today and fail tomorrow."

Can you put this sentence in the right order?

Tap the words to place them here

Keep building your technical English

You just looked up what this word means. Lingua-e turns vocabulary like this into full practice: fill-in-the-blanks, listening, and real developer conversations.

Practice this for free

Related terms

Was this page helpful?