not able to be returned, not allowing the flow of fluid or gas in the opposite direction

Formal and Informal Expressions of nonreturn

In different contexts, you can replace 'nonreturn' with suitable alternatives. In a more formal setting, 'irreversible' is apt. In informal speech or writing, 'one-way' is a commonplace synonym.

nonreturn: Explore its Definition & Usage

nonreturn Definition

1not able to be returned
2not allowing the flow of fluid or gas in the opposite direction

Using nonreturn: Examples

Take a moment to familiarize yourself with how "nonreturn" can be used in various situations through the following examples!

Example
The store has a nonreturn policy for opened items.
Example
The valve is designed to be nonreturn, preventing backflow of fluids.
Example
The nonreturn flap on the exhaust system ensures that no air can enter the engine.

nonreturn Synonyms and Antonyms

Synonyms for nonreturn

irreversible
unidirectional
one-way

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Summary: nonreturn in Brief

'Nonreturn' [nɒnrɪˈtəːn] means 'not able to be returned' or 'not allowing the flow of fluid or gas in the opposite direction.' It is often used to describe policies or mechanisms that prevent reversal or backflow, such as a nonreturn valve or a nonreturn policy at a store.